ISO/IEC 13251:2019

INTERNATIONAL ISO/IEC
STANDARD 13251
Second edition
2019-05
Information technology — Collection
of graphical symbols for office
equipment
Technologies de l'information — Collection de symboles graphiques
pour matériel de bureau
Reference number
©
ISO/IEC 2019
© ISO/IEC 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO/IEC 2019 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Basic principles for graphical symbols for use on equipment . 1
5 Source of graphical symbols . 2
6 Graphical symbols for office equipment . 2
Bibliography .81
© ISO/IEC 2019 – All rights reserved iii

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that
are members of ISO or IEC participate in the development of International Standards through
technical committees established by the respective organization to deal with particular fields of
technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other
international organizations, governmental and non-governmental, in liaison with ISO and IEC, also
take part in the work.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www .iso .org/patents) or the IEC
list of patent declarations received (see http: //patents .iec .ch).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 35, User interfaces.
This second edition cancels and replaces the first edition (ISO/IEC 13251:2004), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— Addition of 69 new graphical symbols identified by the numbers 380.448; and
— Simplification of document view by avoiding repetition of the same technical contents in
different visualization.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO/IEC 2019 – All rights reserved

Introduction
A graphical symbol is defined as a visually perceptible figure used to transmit information
independently of language. It may be produced by drawing, printing or other means. The principles for
the creation of graphical symbols for use on equipment are described in IEC 80416-1.
To respond to the increasing international interest in the design and use of graphical symbols, this
collection presents a certain number of graphical symbols for use on office equipment.
Reference should be made to IEC 80416-3 for rules for the application and modification of the graphical
symbols and for supplementary information.
The process of creating new symbols is described in ISO/IEC Directives, Part 1 and Consolidated
ISO Supplement: 2018, Annex SH and IEC Supplement (Annex SL, Processes for the validation of new
graphical symbols for use on equipment).
© ISO/IEC 2019 – All rights reserved v

INTERNATIONAL STANDARD ISO/IEC 13251:2019(E)
Information technology — Collection of graphical symbols
for office equipment
1 Scope
This document provides a collection of graphical symbols which are used typically on office equipment
to aid in the user operation of, for example, personal computers, printers, telephones and copying
machines.
These graphical symbols are also used in other application areas if appropriate.
NOTE The graphical symbols in this document are collections of relevant graphical symbols standardized in
IEC 60417 and ISO 7000.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 80416-1, Basic principles for graphical symbols for use on equipment — Part 1: Creation of graphical
symbols for registration
ISO 80416-2, Basic principles for graphical symbols for use on equipment — Part 2: Form and use of arrows
IEC 80416-3, Basic principles for graphical symbols for use on equipment — Part 3: Guidelines for the
application of graphical symbols
ISO 80416-4, Basic principles for graphical symbols for use on equipment — Part 4: Guidelines for the
application of graphical symbols on screens and displays (icons)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http: //www .electropedia .org/
— ISO Online browsing platform: available at https: //www .iso .org/obp
3.1
graphical symbol
visually perceptible figure with a particular meaning used to transmit information independently of
language
[SOURCE: IEC 80416-1:2008, 3.4]
4 Basic principles for graphical symbols for use on equipment
For the basic principles given in creation of a new graphical symbol, IEC 80416-1 and ISO 80416-2 shall
be followed.
In the application of standardized graphical symbols, IEC 80416-3 and ISO 80416-4 shall be followed.
© ISO/IEC 2019 – All rights reserved 1

5 Source of graphical symbols
All graphical symbols in this document are taken from IEC 60417 and ISO 7000. For the latest
updates, IEC 60417 (published and maintained in a database format at http: //www .graphical -symbols
.info/equipment) and https: //www .iso .org/obp (which contains all graphical symbols in ISO 7000) shall
be consulted.
6 Graphical symbols for office equipment
001 “ON” (power)
To indicate connection to the mains, at least for mains switches or their positions, and all those cases
where safety is involved.
The meaning of this graphical symbol depends upon its orientation.
See also symbol IEC 60417-5264.
IEC 60417-5007
002 “OFF” (power)
To indicate disconnection from the mains, at least for mains switches or their positions, and all those
cases where safety is involved.
See also symbol IEC 60417-5265.
IEC 60417-5008
003 “ON”/“OFF” (push-push)
To indicate connection to or disconnection from the mains, at least for mains switches or their positions,
and all those cases where safety is involved. Each position, “ON” or “OFF”, is a stable position.
IEC 60417-5010
004 “ON”/“OFF” (push button)
To indicate connection to the mains, at least for mains switches or their positions, and all those cases
where safety is involved. “OFF” is a stable position, whilst the “ON” position only remains during the time
the button is depressed.
IEC 60417-5011
005 “ON” for a part of equipment
To indicate the "ON” condition for a part of equipment, if the symbol IEC 60417-5007 cannot be used, for
example, to identify the “ON” position of a switch.
To be used in association with the symbol IEC 60417-5265.
IEC 60417-5264
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006 “OFF” for a part of equipment
To indicate the “OFF” condition for a part of equipment, if the symbol IEC 60417-5008 cannot be used, for
example, to identify the “OFF” position of a switch.
To be used in association with the symbol IEC 60417-5264.
IEC 60417-5265
007 Stand-by or preparatory state for a part of equipment
To indicate the stand-by or preparatory state for a part of equipment, if the symbol IEC 60417-5009 cannot
be used, for example, to identify the “STAND-BY” position of a switch.
IEC 60417-5266
008 Electric energy
To signify any source of electric energy, for example on devices starting or stopping the production or use
of electric energy.
ISO 7000-0232
009 Ready (to operate)
To indicate the machine is ready for operation.
ISO 7000-1140
010 Stand-by
To identify the switch or switch position by means of which part of the equipment is switched on in order
to bring it into the stand-by condition, and to identify the control to shift to or to indicate the state of low
power consumption.
Each of different states of power consumption may be indicated using a corresponding colour.
See also symbol IEC 60417-5266.
IEC 60417-5009
011 Pause; interruption
To identify the control device by means of which the run (e. g of a tape) is interrupted by means of a break
mechanism and mechanical disconnection from the driving mechanism which continues to run.
IEC 60417-5111
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012 Start (of action)
To identify the start button.
See also symbols IEC 60417-5177 and IEC 60417-5659
IEC 60417-5104
013 Fast start
To identify the control by means of which, for example, a process, a programme, a tape is started such that
the operational speed is attained without significant delay.
To be used particularly when symbol IEC 60417-5104 is also used on the same equipment.
See also symbol IEC 60417-5659.
IEC 60417-5177
014 Stop (of action)
To identify the control device by means of which an action is stopped.
This means stopping only by partial electrical disconnection.
See also symbol IEC 60417-5178.
IEC 60417-5110
015 Fast stop
To identify the control by means of which for example a process, a programme, a tape is stopped without
significant delay.
To be used particularly when symbol IEC 60417-5110 is also used on the same equipment.
IEC 60417-5178
016 Ready (finished); acknowledgement
To indicate the machine is ready to proceed.
ISO 7000-0422
017 Movement in one direction
To indicate that a control, or an object by means of a control, can be moved in the indicated direction.
Only the linear version is given, since the radius of the arrow of the curved version depends on the diame-
ter of the control concerned. The curved version is shown in ISO 7000-0004.
IEC 60417-5022
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018 Direction of continuous rotation
To indicate that a control, or an object by means of a control, can be moved in a clockwise rotary motion.
ISO 7000-0004
019 Movement in both directions
To indicate that a control or an object, by means of a control, can be moved in both the indicated directions.
Only the linear version is given, since the radius of the arrow of the curved version depends on the diame-
ter of the control concerned. The curved version is shown in ISO 7000-0005.
IEC 60417-5023
020 Rotation in two directions
To indicate that a control, or an object by means of a control, can be moved in clockwise and anticlockwise
rotation.
ISO 7000-0005
021 Movement limited in both directions
To indicate that a control, or an object by means of a control, can be moved in both the indicated directions
within certain limits.
Only the linear version is given, since the radius of the arrow of the curved version depends on the diame-
ter of the control concerned.
IEC 60417-5024
022 Effect or action away from a reference point
To indicate the direction of a certain effect or action away from a real or imaginary reference point or
mark, which is realized by means of the control marked with this symbol.
IEC 60417-5025
023 Effect or action towards a reference point
To indicate the direction of a certain effect or action towards a real or imaginary reference point or mark,
which is realized by means of the control marked with this symbol, for example, reset.
EC 60417-5026
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024 Effect or action in both directions away from a reference point
To indicate the direction of a certain effect or action in both directions away from a real or imaginary
reference point or mark, which is realized by means of the control marked with this symbol.
IEC 60417-5027
025 Effect or action in both directions toward a reference point
To indicate the direction of a certain effect or action in both directions towards a real or imaginary refer-
ence point or mark, which is realized by means of the control marked with this symbol.
IEC 60417-5028
026 Non-simultaneous effect or action away from and towards a reference point
To indicate the direction of a certain non-simultaneous effect or action away from and towards a real or
imaginary reference point or mark, which is realized by means of the control marked by this symbol.
IEC 60417-5029
027 Simultaneous effect or action away from and towards a reference point
To indicate the direction of a certain simultaneous effect or action away from and towards a real or imagi-
nary reference point or mark, which is realized by means of the control marked by this symbol.
IEC 60417-5030
028 Remote control
Dictation equipment, office equipment, cinematography, mobile elevating work platforms
To indicate the remote control function, for example, the connection point for a remote control lead.
ISO 7000-0093
029 Return to an initial state
To identify the control which returns a device to its initial state.
IEC 60417-5495
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030 Remote station, ready
To identify the display panel indicator which signifies that the remote station is in a ready condition.
ISO 7000-1937
031 Remote station, stand-by
To identify the display panel indicator which signifies that the remote station is in a stand-by condition.
ISO 7000-1938
032 Acknowledgement of remote station positive
To identify the display panel indicator which signifies that the remote station is in a positive acknowledge-
ment condition, ready to operate.
ISO 7000-1940
033 Acknowledgement of remote station negative
To identify the display panel indicator which signifies that the remote station is in a negative acknowl-
edgement condition, not ready to operate.
ISO 7000-1941
034 Remote station out of order, disturbance at remote station
To identify the display panel indicator which signifies that the remote station is in a disturbance or fault
condition.
ISO 7000-1939
035 Call operator of remote station
To identify the display panel indicator which signifies that the remote station is being called.
ISO 7000-1950
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036 No operator response from remote station
To identify the display panel indicator which signifies that the remote station operation is not responding.
ISO 7000-1951
037 Fuse
To identify fuse boxes or their location.
IEC 60417-5016
038 Positioning of cell
On and in battery holders.
To identify the battery holder itself and to identify the positioning of the cell(s) inside the battery holder.
IEC 60417-5002
039 Battery, general
On battery powered equipment.
To identify a device related to the supply of equipment by means of a (primary or secondary) battery, for
instance, a battery test button, the location of the connector terminals, etc.
To identify a battery check function, the use of symbol IEC 60417-5546 is recommended.
This symbol is not intended to be used to indicate polarity.
IEC 60417-5001
040 Input
To identify an input terminal when it is necessary to distinguish between inputs and outputs.
IEC 60417-5034
041 Output
To identify an output terminal when it is necessary to distinguish between inputs and outputs.
IEC 60417-5035
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042 Direct current
To indicate on the rating plate that the equipment is suitable for direct current only; to identify relevant
terminals.
IEC 60417-5031
043 Alternating current
To indicate on the rating plate that the equipment is suitable for alternating current only; to identify
relevant terminals.
IEC 60417-5032
044 Both direct and alternating current
To indicate on the rating plate that the equipment is suitable for both direct and alternating current (uni-
versal); to identify relevant terminals.
IEC 60417-5033
045 Plug and socket; plug connection
To signify plug and socket, for example, for compressed air.
ISO 7000-0354
046 Earth (ground)
To identify an earth (ground) terminal in cases where neither the symbol IEC 60417-5018 nor IEC 60417-
5019 is explicitly required.
IEC 60417-5017
047 Noiseless (clean) earth (ground)
To identify a noiseless (clean) earth (ground) terminal, for example, on a specially designed earthing
(grounding) system to avoid causing malfunction of the equipment.
IEC 60417-5018
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048 Protective earth; protective ground
To identify any terminal which is intended for connection to an external conductor for protection against
electric shock in case of a fault, or the terminal of a protective earth (ground) electrode.
IEC 60417-5019
049 Frame or chassis
To identify the frame or chassis terminal.
IEC 60417-5020
050 Lamp; lighting; illumination
To identify switches which control light sources, for example, room lighting, lamp of a film projector, dial
illumination of a device.
See also symbols IEC 60417-5320 and IEC 60417-5321.
IEC 60417-5012
051 Indirect lighting
To identify a control for indirect lighting if a distinction from the symbol IEC 60417-5012 is necessary.
IEC 60417-5320
052 Low-intensity lighting
To identify a control for low-intensity lighting if a distinction from the symbol IEC 60417-5012 is neces-
sary, for example, dark-room lighting.
IEC 60417-5321
053 Brightness; brilliance
To identify the brightness control, for example of a light dimmer, a television receiver, a monitor, an oscil-
loscope.
IEC 60417-5056
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054 Contrast
To identify the contrast control, for example, of a television receiver, a monitor, an oscilloscope.
IEC 60417-5057
055 Light
To identify a pre-set adjustment of the machine contrast to produce a lighter copy, for example, on an
office document copying machine.
ISO 7000-2165
056 Dark
To identify a pre-set adjustment of the machine contrast to produce a darker copy, for example, on an
office document copying machine.
ISO 7000-2166
057 Colour (qualifying symbol)
To distinguish between the controls and terminals for colour from those for monochrome operation.
If this symbol is reproduced in colour, the colours of the dots shall be red (left), blue (top) and green
(right).
IEC 60417-5048
058 Colour saturation
To identify the colour saturation control.
IEC 60417-5058
059 Bell
To identify switches which operate bells, for example, a door bell.
IEC 60417-5013
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060 Clock; time switch; timer
To identify terminals and controls related to clocks, time switches and timers.
IEC 60417-5184
061 Programmable timer, general
To identify the control for a programmable timer, for instance, the operating element for a programmed
function.
See also derivatives from this symbol wherein the dot on the rim of the dial represents a preset point in
the scale of time, for example, symbol IEC 60417-5417.
IEC 60417-5440
062 Key switch; key fastener
For operating the interlock permitting the opening or locking of a door, for example, a push button to
unlock a front door.
ISO 7000-0517
063 General symbol for recovery/recyclable
To indicate that a material is part of a recovery/recycling process.
Applicable only to those products or materials for which at the end of life there is a well-defined collection
route and recycling process, and which do not significantly impair the effectiveness of other recycling
schemes.
ISO 7000-1135
064 Read operator's manual
To indicate that the operator's manual or card instructions should be read before continuing operation.
ISO 7000-0790
064 Operating instructions
To indicate that the information describes the operating instructions for the equipment.
ISO 7000-1641
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066 Handbook; manual for operations
To indicate that the information describes the machines servicing procedures.
ISO 7000-1640
067 Monitoring
To identify the display panel indicator which signifies that other display panel indicators must be moni-
tored by the operator for proper machine or system operation.
ISO 7000-2030
068 Test run
To identify the control which signifies that the equipment is in a test run condition or can be placed in a
test run condition.
ISO 7000-1942
069 Foot switch
To identify a foot switch or the connection for a foot switch.
This symbol may be supplemented by the symbol for foot-operated (ISO 7000-1853).
IEC 60417-5114
070 “IN” position of a bi-stable push control
To associate the “IN” position of a bi-stable push control with the corresponding function.
IEC 60417-5268
071 “OUT” position of a bi-stable push control
To associate the “OUT” position of a bi-stable push control with the corresponding function.
IEC 60417-5269
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072 Close (a container)
To signify the closing of a container.
See also symbol ISO 7000-0024.
ISO 7000-0025
073 Open (a container)
To signify the opening of a closed container.
See also symbol ISO 7000-0025.
ISO 7000-0024
074 Eject
To identify the control for the eject function.
This symbol should be used instead of symbol IEC 60417-5113.
IEC 60417-5459
075 Rejection
On disk and magnetic tape cassette reproduction equipment.
To identify the control device by means of which the disk or tape cassette is to be rejected or ejected.
For new applications, the use of this symbol is deprecated and symbol IEC 60417-5459 shall be used.
IEC 60417-5113
076 Manual control
To signify the switch position for manual control as opposed to automatic control.
ISO 7000-0096
077 Automatic control (closed loop)
To signify any automatic closed loop function.
ISO 7000-0017
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078 Automatic cycle; semi-automatic cycle
To signify an automatic sequence of machine functions repeated continuously without manual intervention.
ISO 7000-0026
079 Interruption of automatic cycle and return to start position
To signify the interruption of an automatic cycle and the return of the start position, for example, on a
control of a machine tool.
ISO 7000-0427
080 Select
To identify the control used to cause the machine to operate in response to indicators on an address mas-
ter, and/or to identify the related display panel indicator.
ISO 7000-1996
081 Variability
To identify the control device by means of which a quantity is controlled. The controlled quantity increas-
es with the figure width.
Only the linear version is given since the radius of the base of the curved version depends on the diameter
of the control concerned. The curved version is shown in symbol ISO 7000-1364.
See also symbols IEC 60417-5181 and IEC 60417-5183.
IEC 60417-5004
082 Variability in steps
To identify the device by which a quantity is controlled. The controlled quantity increases in steps with
the figure width.
Only the linear version is given since the radius of the base of the curved version depends on the diameter
of the control concerned. The curved version is shown in symbol ISO 7000-1364.
See also symbol IEC 60417-5004.
IEC 60417-5181
083 Variability, for rotating movement
To identify the control by means of which a quantity is controlled. The controlled quantity increases/de-
creases by rotation with the figure width.
Only the rotational version is given, for the linear version see symbol IEC 60417-5004.
See also symbol ISO 7000-2164.
ISO 7000-1364
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084 Variability, for rotating movement, variability in steps
To identify the control by means of which a quantity is controlled. The controlled quantity increases/de-
creases by rotation in steps with the figure width.
Only the rotational version is given, for the linear version see symbol IEC 60417-5181.
Also see symbol ISO 7000-1364.
ISO 7000-2164
085 Balance
To identify the balance control.
IEC 60417-5072
086 Adjustment to a minimum
To identify the control by means of which a quantity is adjusted to its minimum value.
For example: "zero" control or balancing of a bridge device; rejection of an unwanted signal; minimum
deviation of a meter, indicator.
IEC 60417-5146
087 Adjustment to a maximum
To identify the control by means of which a quantity is adjusted to its maximum value.
For example: tuning, maximum deviation of a meter, indicator.
IEC 60417-5147
088 Variable speed
To identify the control used to place the equipment in the variable speed mode and/or to identify the
related display panel indicator.
ISO 7000-1943
089 Pressure adjustment
To identify the control used to adjust the pressure level.
ISO 7000-1979
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090 Inking adjustment
To identify the control used to adjust the ink flow rate or quantity.
ISO 7000-1980
091 Toner adjustment
To indicate the regulation of toner supplied to the developing system of the machine, for example, on an
office document copying machine.
ISO 7000-0676
092 Exposure adjustment
To identify the control used to place the device in the variable exposure mode and/or to identify the relat-
ed display panel indicator.
ISO 7000-1954
093 Cutting adjustment
To identify the control used to adjust the cutting device to cut material to a pre-determined length.
ISO 7000-1981
094 Copy length selector
To indicate the means of preselecting the length of copy paper/material to be cut from the roll-on, roll-fed
machines, for example, on an office document copying machine.
ISO 7000-0683
095 Temperature control
To indicate the regulation or control of temperature, for example on servicing devices setting in motion
the regulation (or automatic regulation) of temperature.
ISO 7000-0175
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096 Telephone; telephone adapter
To identify the terminals to which a telephone adapter is to be connected, and to identify telephone booths.
IEC 60417-5090
097 Telephone disconnected
To identify the display panel indicator which signifies that the telephone is disconnected.
ISO 7000-1949
098 Microphone
To identify the socket, terminals or switch for a microphone.
IEC 60417-5082
099 Earphone
To identify the socket, terminals or switch for an earphone.
IEC 60417-5076
100 Headphones
To identify the socket, terminals or switch for headphones.
IEC 60417-5077
101 Stereophonic headphones
To identify the socket, terminals or switch for stereophonic headphones.
IEC 60417-5078
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102 Headset
To identify the socket, terminals or switch for a headset.
IEC 60417-5079
103 Loudspeaker
To identify the socket, terminals or switch for a loudspeaker.
The rated values, such as impedance, voltage and power, may be added to the symbol.
See also symbol IEC 60417-5081, symbol IEC 60417-5126 and symbol IEC 60417-5127.
IEC 60417-5080
104 Loudspeaker in operation as a microphone
To identify the switch or switch position by which a loudspeaker is brought into the microphone mode.
This symbol should be used in combination with symbol IEC 60417-5127.
See also symbols IEC 60417-5080 and IEC 60417-5081.
IEC 60417-5126
105 Loudspeaker in operation as such
To identify the switch or switch position by which a loudspeaker is brought into the loudspeaker mode.
This symbol should be used in combination with symbol IEC 60417-5126.
See also symbols IEC 60417-5080 and IEC 60417-5081.
IEC 60417-5127
106 Loudspeaker/microphone
On intercom equipment.
To identify the talk/listen button.
See also symbol IEC 60417-5080, symbol IEC 60417-5126 and symbol IEC 60417-5127.
IEC 60417-5081
107 Muting (USA: Squelch)
On radio and television receivers.
To identify the switch position in which the muting (squelch) circuit is switched on.
IEC 60417-5047
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108 Speak
To indicate a "speak" facility.
IEC 60417-5210
109 Listen
To indicate a "listen" facility.
IEC 60417-5211
110 Sound; audio
To identify controls or terminals related to audio signals.
IEC 60417-5182
111 Music
On amplifiers
To identify the "music" position of the speech-music switch.
IEC 60417-5085
112 Treble control
On electro-acoustic equipment and radio receivers.
To identify the control for the higher audio frequencies.
IEC 60417-5037
113 Bass control
On electro-acoustic equipment and radio receivers.
To identify the control for the lower audio frequencies.
IEC 60417-5038
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114 Aerial (USA: Antenna)
On radio receiving and transmitting equipment.
To identify the aerial (antenna) terminals. This symbol should be used unless it is essential to specify the
type of aerial (antenna).
IEC 60417-5039
115 Tape recorder
To identify the terminals, switches and controls by means of which a tape recorder is to be connected and
operated.
This symbol may represent any kind of magnetic or paper tape recorder. In the case of equipment accept-
ing more than one kind of recorder, additional symbols should be used to distinguish between the various
kinds. In such a case this symbol has the meaning of “Magnetic tape sound recorder”.
IEC 60417-5093
116 Recording on tape
To identify the switch or switch position by which the tape recorder is switched to its recording position.
See also symbol IEC 60417-5163.
IEC 60417-5095
117 Play-back or reading from tape
To identify the switch or switch position by which the tape recorder is switched to its play-back position.
See also symbol IEC 60417-5164.
IEC 60417-5096
118 Erasing from tape
To identify the switch or switch position used to erase the signal from the tape.
See also symbol IEC 60417-5165.
IEC 60417-5097
119 Monitoring at the input during recording on tape
To identify the control by means of which monitoring at the input during recording is provided.
See also symbol IEC 60417-5166.
IEC 60417-5098
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120 Monitoring of tape after recording on tape
To identify the control by which monitoring of tape after recording on tape is provided.
See also symbol IEC 60417-5167.
IEC 60417-5099
121 Monitoring during play-back or reading from tape
To identify the control by means of which monitoring during play-back is provided.
See also symbol IEC 60417-5168.
IEC 60417-5100
122 Recording lock on tape recorders
To identify the control of the locking device which is intended to prevent accidental recording.
See also symbol IEC 60417-5169.
IEC 60417-5101
123 Pulse marker on tape recorders
To identify the control by means of which marking signals can be recorded on the tape, for example, for
synchronization, start-stop pulses, random access and multiple choice.
See also symbol IEC 60417-5170.
IEC 60417-5102
124 Instruction or correction
On dictating machines and other recording media.
To identify the control device by means of which an electromagnetic system is operated which marks a
paper index strip to indicate an instruction or correction.
IEC 60417-5105
125 Add/load cassette
To identify the display panel indicator which signifies that the cassette is to be loaded in the device.
ISO 7000-1948
22 © ISO/IEC 2019 – All rights reserved

126 Add/load diskette
To identify the display panel indicator which signifies that the diskette is to be loaded in the device.
ISO 7000-1947
127 Television; video
To identify the controls and terminals specifically meant for (mainly monochrome) video signals.
IEC 60417-5049
128 Vertical synchronization
To identify the vertical synchronization control, for example, of a television receiver, a monitor.
IEC 60417-5062
129 Horizontal picture shift
To identify the control for the horizontal picture shift, for example, of a television receiver, a monitor, an
oscilloscope, a film projector.
IEC 60417-5063
130 Vertical picture shift
To identify the control for the vertical picture shift, for example, of a television receiver, a monitor, an
oscilloscope, a film projector.
IEC 60417-5064
131 Horizontal picture amplitude
To identify the control for the horizontal picture amplitude (picture width), for example, of a television
receiver, a monitor.
IEC 60417-5065
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132 Vertical picture amplitude
To identify the control for the vertical picture amplitude (picture height), for example, of a television
receiver, a monitor.
IEC 60417-5066
133 Picture size adjustment
To identify the picture size control.
IEC 60417-5067
134 Horizontal linearity
To identify the control for the horizontal linearity, for example, for a television receiver, a monitor, an
oscilloscope.
IEC 60417-5068
135 Vertical linearity
To identify the control for the linearity of, for example, a television receiver or a monitor.
IEC 60417-5069
136 Colour television
To identify the controls and terminals specifically meant for colour video signals.
If this symbol is reproduced in colour, the colours of the dots shall be red (left), blue (top) and green
(right).
IEC 60417-5050
137 Focus
To identify the focusing control(s), for example of a television receiver, a monitor, an oscilloscope, an
electronic microscope
IEC 60417-5055
24 © ISO/IEC 2019 – All rights reserved

138 Crispener
On television receivers and monitors.
To identify the crispener control.
IEC 60417-5059
139 Hue
On colour television receivers and monitors.
To identify the hue control.
If this symbol is reproduced in colour, the colours of the dots shall be red (left), blue (top) and green
(right).
IEC 60417-5060
140 Horizontal synchronization
To identify the horizontal synchronisation control, for example, of a television receiver or a monitor.
IEC 60417-5061
141 Page hold
To identify the control for page hold on a display unit, for example, for teletext.
IEC 60417-5290
142 Interactive videotext deactivated
To identify the control for termination of interactive videotext.
ISO 7000-1957
143 Temporarily inactive attributes, disable attributes
To identify the control for inactive attributes or disable attributes, for example, to suppress the attribute
for blink or double size.
ISO 7000-1958
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144 Reveal
To identify the control for opening information.
ISO 7000-1959
145 Picture-in-picture mode
To identify the control for picture-in-picture mode.
IEC 60417-5291
146 Billing information
To identify the control for billing information.
ISO 7000-1960
147 Message service
To identify the control for opening the message service.
ISO 7000-1961
148 End of data entry; data collection terminator
To identify the control for the termination of data entry.
ISO 7000-1962
149 Initiator
To identify the control for indicating the party initiating the function.
ISO 7000-1963
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150 Terminator
To identify the control for indicating the party terminating the function.
ISO 7000-1964
151 Clear screen
To identify the control for removing the visual representation displayed on the screen.
ISO 7000-2024
152 Scrolling
To identify the control for switching scrolling on or off.
ISO 7000-2025
153 Help
To identify the control used to request information about objects or functions.
ISO 7000-2026
154 Application assistance
To identify the control for application assistance, for example, revealing or concealing supplementary
information.
IEC 60417-5289
155 Print screen; hard copy
To identify the control to send to a printing device the data currently displayed on the screen.
ISO 7000-2027
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156 Minus; negative polarity
To identify the negative terminal(s) of equipment which is used with, or generates, direct current.
The meaning of this graphical symbol depends upon its orientation.
IEC 60417-5006
157 Plus; positive polarity
To identify the positive terminal(s) of equipment which is used with, or generates, direct current.
The meaning of this graphical symbol depends upon its orientation.
IEC 60417-5005
158 Multiplication
To identify the control for multiplication, for example, on a calculator.
The symbol ISO 7000-0656 “Total" can also be used to represent the function “Multiplication”.
The meaning of this graphical symbol depends upon its orientation.
ISO 7000-0654
159 Division
To identify the control for division, for example, on a calculator.
This graphical symbol may also appear without the horizontal line.
ISO 7000-0655
160 Equals
To identify the control for equals, for example, on a keyboard of an office machine.
ISO 7000-0652
161 Total
To identify the control for total, for example, on a keyboard of an office machine.
The symbol ISO 7000-0652 “‗Equal” can also be used to represent the function “Total”.
The meaning of this symbol depends upon its orientation.
ISO 7000-0656
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162 Square root
To identify the control for square root, for example, on a calculator.
ISO 7000-0653
163 Subtotal
To identify the control for subtotal, for example, on a calculator.
ISO 7000-0650
164 Non-add
To identify the control for non-add, for example, on a keyboard of an office machine.
ISO 7000-0657
168 Store
To indicate a reference to the storage of data.
ISO 7000-0987
169 Write data into store
To identify the control to send data or a message to the current application.
ISO 7000-1025
170 Read data from store
To identify the control to read data from a storage device.
ISO 7000-1026
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171 Write and read data into and from store
To identify the control to write data into and retrieve data from a storage device.
ISO 7000-1107
172 Memory/text storage full
To identify the display panel indicator that signifies that the memory/storage is full.
ISO 7000-1946
173 Storage/store mode finished
To identify the control to finish a storage/store mode.
For storage/store mode on, see ISO 7000-0987.
IEC 60417-5460
174 Reset
To identify the control for return of the machine mode to a previously determined operating condition.
ISO 7000-1027
175 Cancel; delete
To identify the control to delete a selected object.
ISO 7000-1028
176 General cancel
To identify the control to cancel all of the services previously activated.
See ITU-T Recommendation E.121.
IEC 60417-5503
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177 Constant input
To identify the control for constant input, on business equipment.
ISO 7000-1972
178 Constant recall
To identify the control for constant recall, on business equipment.
ISO 7000-1973
179 Control
To identify the control to activate a function under application control (the corresponding key being used
in conjunction with another key).
ISO 7000-2028
180 Escape
To identify the control to cancel the current action or exit from the current state.
ISO 7000-2029
181 Undo
To identify the control to return to the state prior to that of the last executed action.
ISO 7000-2106
182 Alternate
To identify the control to select a function under application control (the corresponding key being used in
conjunction with another key).
ISO 7000-2105
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183 Interrupt
To indicate the suspension of a controlled sequence or programme in order to process another item, for
example, a copy from another original during a programmed run on a document copying
...