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BS EN 301549:2018

BS EN 301549:2018

$239.77

Accessibility requirements for ICT products and services

Published By Publication Date Number of Pages
BSI 2018 156
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PDF Catalog

PDF Pages PDF Title
2 undefined
4 Administrative information
Reference
Keywords
CEN / CENELEC / ETSI
Copyright Notification
5 Contents
10 Important notice
Intellectual Property Rights
Foreword
11 Modal verbs terminology
Introduction
12 1 Scope
2 References
2.1 Normative references
13 2.2 Informative references
15 3 Definitions and abbreviations
3.1 Definitions
18 3.2 Abbreviations
19 4 Functional performance
4.1 Meeting functional performance statements
4.2 Functional performance statements
4.2.1 Usage without vision
4.2.2 Usage with limited vision
20 4.2.3 Usage without perception of colour
4.2.4 Usage without hearing
4.2.5 Usage with limited hearing
4.2.6 Usage without vocal capability
4.2.7 Usage with limited manipulation or strength
4.2.8 Usage with limited reach
21 4.2.9 Minimize photosensitive seizure triggers
4.2.10 Usage with limited cognition
4.2.11 Privacy
22 5 Generic requirements
5.1 Closed functionality
5.1.1 Introduction (informative)
5.1.2 General
5.1.2.1 Closed functionality
5.1.2.2 Assistive technology
5.1.3 Non-visual access
5.1.3.1 General
5.1.3.2 Auditory output delivery including speech
23 5.1.3.3 Auditory output correlation
5.1.3.4 Speech output user control
5.1.3.5 Speech output automatic interruption
5.1.3.6 Speech output for non-text content
5.1.3.7 Speech output for video information
24 5.1.3.8 Masked entry
5.1.3.9 Private access to personal data
5.1.3.10 Non-interfering audio output
5.1.3.11 Private listening volume
5.1.3.12 Speaker volume
5.1.3.13 Volume reset
25 5.1.3.14 Spoken languages
5.1.3.15 Non-visual error identification
5.1.3.16 Receipts, tickets, and transactional outputs
5.1.4 Functionality closed to text enlargement
26 5.1.5 Visual output for auditory information
5.1.6 Operation without keyboard interface
5.1.6.1 Closed functionality
27 5.1.6.2 Input focus
5.2 Activation of accessibility features
5.3 Biometrics
5.4 Preservation of accessibility information during conversion
5.5 Operable parts
5.5.1 Means of operation
5.5.2 Operable parts discernibility
5.6 Locking or toggle controls
5.6.1 Tactile or auditory status
28 5.6.2 Visual status
5.7 Key repeat
5.8 Double-strike key acceptance
5.9 Simultaneous user actions
29 6 ICT with two-way voice communication
6.1 Audio bandwidth for speech
6.2 Real-time text (RTT) functionality
6.2.1 RTT provision
6.2.1.1 RTT communication
6.2.1.2 Concurrent voice and text
6.2.2 Display of Real-time Text
6.2.2.1 Visually distinguishable display
6.2.2.2 Programmatically determinable send and receive direction
30 6.2.3 Interoperability
6.2.4 Real-time text responsiveness
6.3 Caller ID
6.4 Alternatives to voice-based services
6.5 Video communication
6.5.1 General (informative)
31 6.5.2 Resolution
6.5.3 Frame rate
6.5.4 Synchronization between audio and video
6.6 Alternatives to video-based services
32 7 ICT with video capabilities
7.1 Caption processing technology
7.1.1 Captioning playback
7.1.2 Captioning synchronization
7.1.3 Preservation of captioning
7.2 Audio description technology
7.2.1 Audio description playback
7.2.2 Audio description synchronization
7.2.3 Preservation of audio description
33 7.3 User controls for captions and audio description
34 8 Hardware
8.1 General
8.1.1 Generic requirements
8.1.2 Standard connections
8.1.3 Colour
8.2 Hardware products with speech output
8.2.1 Speech volume gain
8.2.1.1 Speech volume range
8.2.1.2 Incremental volume control
8.2.2 Magnetic coupling
8.2.2.1 Fixed-line devices
35 8.2.2.2 Wireless communication devices
8.3 Physical access to ICT
8.3.1 General (informative)
8.3.2 Clear floor or ground space
8.3.2.1 Change in level
36 8.3.2.2 Clear floor or ground space
8.3.2.3 Approach
8.3.2.3.1 General
8.3.2.3.2 Forward approach
37 8.3.2.3.3 Parallel approach
8.3.2.4 Knee and toe clearance width
8.3.2.5 Toe clearance
8.3.2.6 Knee clearance
38 8.3.3 Reach range for ICT
8.3.3.1 Forward reach
8.3.3.1.1 Unobstructed high forward reach
8.3.3.1.2 Unobstructed low forward reach
8.3.3.1.3 Obstructed reach
39 8.3.3.2 Side reach
8.3.3.2.1 Unobstructed high side reach
8.3.3.2.2 Unobstructed low side reach
40 8.3.3.2.3 Obstructed side reach
8.3.4 Visibility
8.3.5 Installation instructions
8.4 Mechanically operable parts
8.4.1 Numeric keys
41 8.4.2 Operation of mechanical parts
8.4.2.1 Means of operation of mechanical parts
8.4.2.2 Force of operation of mechanical parts
8.4.3 Keys, tickets and fare cards
8.5 Tactile indication of speech mode
42 9 Web
9.0 General (informative)
43 9.1 Perceivable
9.1.1 Text alternatives
9.1.1.1 Non-text content
9.1.2 Time-based media
9.1.2.1 Audio-only and video-only (pre-recorded)
9.1.2.2 Captions (pre-recorded)
9.1.2.3 Audio description or media alternative (pre-recorded)
9.1.2.4 Captions (live)
9.1.2.5 Audio description (pre-recorded)
9.1.3 Adaptable
9.1.3.1 Info and relationships
9.1.3.2 Meaningful sequence
9.1.3.3 Sensory characteristics
9.1.3.4 Orientation
44 9.1.3.5 Identify input purpose
9.1.4 Distinguishable
9.1.4.1 Use of colour
9.1.4.2 Audio control
9.1.4.3 Contrast (minimum)
9.1.4.4 Resize text
9.1.4.5 Images of text
9.1.4.6 Void
9.1.4.7 Void
9.1.4.8 Void
9.1.4.9 Void
9.1.4.10 Reflow
9.1.4.11 Non-text contrast
9.1.4.12 Text spacing
9.1.4.13 Content on hover or focus
45 9.2 Operable
9.2.1 Keyboard accessible
9.2.1.1 Keyboard
9.2.1.2 No keyboard trap
9.2.1.3 Void
9.2.1.4 Character key shortcuts
9.2.2 Enough time
9.2.2.1 Timing adjustable
9.2.2.2 Pause, stop, hide
9.2.3 Seizures and physical reactions
9.2.3.1 Three flashes or below threshold
9.2.4 Navigable
9.2.4.1 Bypass blocks
9.2.4.2 Page titled
9.2.4.3 Focus Order
9.2.4.4 Link purpose (in context)
46 9.2.4.5 Multiple ways
9.2.4.6 Headings and labels
9.2.4.7 Focus visible
9.2.5 Input modalities
9.2.5.1 Pointer gestures
9.2.5.2 Pointer cancellation
9.2.5.3 Label in name
9.2.5.4 Motion actuation
9.3 Understandable
9.3.1 Readable
9.3.1.1 Language of page
9.3.1.2 Language of parts
9.3.2 Predictable
9.3.2.1 On focus
9.3.2.2 On input
47 9.3.2.3 Consistent navigation
9.3.2.4 Consistent identification
9.3.3 Input assistance
9.3.3.1 Error identification
9.3.3.2 Labels or instructions
9.3.3.3 Error suggestion
9.3.3.4 Error prevention (legal, financial, data)
9.4 Robust
9.4.1 Compatible
9.4.1.1 Parsing
9.4.1.2 Name, role, value
9.4.1.3 Status messages
9.5 WCAG conformance requirements
49 10 Non-web documents
10.0 General (informative)
10.1 Perceivable
10.1.1 Text alternatives
10.1.1.1 Non-text content
10.1.2 Time-based media
10.1.2.1 Audio-only and video-only (pre-recorded)
50 10.1.2.2 Captions (pre-recorded)
10.1.2.3 Audio description or media alternative (pre-recorded)
10.1.2.4 Captions (live)
10.1.2.5 Audio description (pre-recorded)
10.1.3 Adaptable
10.1.3.1 Info and relationships
10.1.3.2 Meaningful sequence
10.1.3.3 Sensory characteristics
51 10.1.3.4 Orientation
10.1.3.5 Identify input purpose
10.1.4 Distinguishable
10.1.4.1 Use of colour
10.1.4.2 Audio control
10.1.4.3 Contrast (minimum)
10.1.4.4 Resize text
10.1.4.5 Images of text
10.1.4.6 Void
10.1.4.7 Void
10.1.4.8 Void
52 10.1.4.9 Void
10.1.4.10 Reflow
10.1.4.11 Non-text contrast
10.1.4.12 Text spacing
10.1.4.13 Content on hover or focus
10.2 Operable
10.2.1 Keyboard accessible
10.2.1.1 Keyboard
53 10.2.1.2 No keyboard trap
10.2.1.3 Void
10.2.1.4 Character key shortcuts
10.2.2 Enough time
10.2.2.1 Timing adjustable
54 10.2.2.2 Pause, stop, hide
10.2.3 Seizures and physical reactions
10.2.3.1 Three flashes or below threshold
10.2.4 Navigable
10.2.4.1 Void
10.2.4.2 Document titled
55 10.2.4.3 Focus Order
10.2.4.4 Link purpose (in context)
10.2.4.5 Void
10.2.4.6 Headings and labels
10.2.4.7 Focus visible
10.2.5 Input modalities
10.2.5.1 Pointer gestures
10.2.5.2 Pointer cancellation
56 10.2.5.3 Label in name
10.2.5.4 Motion actuation
10.3 Understandable
10.3.1 Readable
10.3.1.1 Language of page
10.3.1.2 Language of parts
57 10.3.2 Predictable
10.3.2.1 On focus
10.3.2.2 On input
10.3.2.3 Void
10.3.2.4 Void
10.3.3 Input assistance
10.3.3.1 Error identification
10.3.3.2 Labels or instructions
10.3.3.3 Error suggestion
10.3.3.4 Error prevention (legal, financial, data)
58 10.4 Robust
10.4.1 Compatible
10.4.1.1 Parsing
10.4.1.2 Name, role, value
10.4.1.3 Void
10.5 Caption positioning
59 10.6 Audio description timing
11 Software
11.0 General (informative)
60 11.1 Perceivable
11.1.1 Text alternatives
11.1.1.1 Non-text content
11.1.1.1.1 Non-text content (open functionality)
11.1.1.1.2 Non-text content (closed functionality)
11.1.2 Time-based media
11.1.2.1 Audio-only and video-only (pre-recorded)
11.1.2.1.1 Audio-only and video-only (pre-recorded – open functionality)
11.1.2.1.2 Audio-only and video-only (pre-recorded – closed functionality)
11.1.2.1.2.1 Pre-recorded audio-only (closed functionality)
11.1.2.1.2.2 Pre-recorded video-only (closed functionality)
11.1.2.2 Captions (pre-recorded)
61 11.1.2.3 Audio description or media alternative (pre-recorded)
11.1.2.3.1 Audio description or media alternative (pre-recorded – open functionality)
11.1.2.3.2 Audio description or media alternative (pre-recorded – closed functionality)
11.1.2.4 Captions (live)
11.1.2.5 Audio description (pre-recorded)
11.1.3 Adaptable
11.1.3.1 Info and relationships
11.1.3.1.1 Info and relationships (open functionality)
62 11.1.3.1.2 Info and relationships (closed functionality)
11.1.3.2 Meaningful sequence
11.1.3.2.1 Meaningful sequence (open functionality)
11.1.3.2.2 Meaningful sequence (closed functionality)
11.1.3.3 Sensory characteristics
11.1.3.4 Orientation
11.1.3.5 Identify input purpose
63 11.1.4 Distinguishable
11.1.4.1 Use of colour
11.1.4.2 Audio control
11.1.4.3 Contrast (minimum)
11.1.4.4 Resize text
11.1.4.4.1 Resize text (open functionality)
11.1.4.4.2 Resize text (closed functionality)
64 11.1.4.5 Images of text
11.1.4.5.1 Images of text (open functionality)
11.1.4.5.2 Images of text (closed functionality)
11.1.4.6 Void
11.1.4.7 Void
11.1.4.8 Void
11.1.4.9 Void
11.1.4.10 Reflow
11.1.4.10.1 Reflow (open functionality)
11.1.4.10.2 Reflow (closed functionality)
11.1.4.11 Non-text contrast
65 11.1.4.12 Text spacing
11.1.4.13 Content on hover or focus
11.2 Operable
11.2.1 Keyboard accessible
11.2.1.1 Keyboard
11.2.1.1.1 Keyboard (open functionality)
11.2.1.1.2 Keyboard (closed functionality)
66 11.2.1.2 No keyboard trap
11.2.1.3 Void
11.2.1.4 Character key shortcuts
11.2.1.4.1 Character key shortcuts (open functionality)
11.2.1.4.2 Character key shortcuts (closed functionality)
11.2.2 Enough time
11.2.2.1 Timing adjustable
67 11.2.2.2 Pause, stop, hide
11.2.3 Seizures and physical reactions
11.2.3.1 Three flashes or below threshold
68 11.2.4 Navigable
11.2.4.1 Void
11.2.4.2 Void
11.2.4.3 Focus order
11.2.4.4 Link purpose (in context)
11.2.4.5 Void
11.2.4.6 Headings and labels
11.2.4.7 Focus visible
11.2.5 Input modalities
11.2.5.1 Pointer gestures
11.2.5.2 Pointer cancellation
69 11.2.5.3 Label in name
11.2.5.4 Motion actuation
11.3 Understandable
11.3.1 Readable
11.3.1.1 Language of software
11.3.1.1.1 Language of software (open functionality)
11.3.1.1.2 Language of software (closed functionality)
70 11.3.1.2 Void
11.3.2 Predictable
11.3.2.1 On focus
11.3.2.2 On input
11.3.2.3 Void
11.3.2.4 Void
11.3.3 Input assistance
11.3.3.1 Error identification
11.3.3.1.1 Error identification (open functionality)
11.3.3.1.2 Error Identification (closed functionality)
11.3.3.2 Labels or instructions
11.3.3.3 Error suggestion
11.3.3.4 Error prevention (legal, financial, data)
71 11.4 Robust
11.4.1 Compatible
11.4.1.1 Parsing
11.4.1.1.1 Parsing (open functionality)
11.4.1.1.2 Parsing (closed functionality)
72 11.4.1.2 Name, role, value
11.4.1.2.1 Name, role, value (open functionality)
11.4.1.2.2 Name, role, value (closed functionality)
11.4.1.3 Void
11.5 Interoperability with assistive technology
11.5.1 Closed functionality
11.5.2 Accessibility services
11.5.2.1 Platform accessibility service support for software that provides a user interface
73 11.5.2.2 Platform accessibility service support for assistive technologies
11.5.2.3 Use of accessibility services
11.5.2.4 Assistive technology
74 11.5.2.5 Object information
11.5.2.6 Row, column, and headers
11.5.2.7 Values
11.5.2.8 Label relationships
11.5.2.9 Parent-child relationships
11.5.2.10 Text
11.5.2.11 List of available actions
11.5.2.12 Execution of available actions
75 11.5.2.13 Tracking of focus and selection attributes
11.5.2.14 Modification of focus and selection attributes
11.5.2.15 Change notification
11.5.2.16 Modifications of states and properties
11.5.2.17 Modifications of values and text
76 11.6 Documented accessibility usage
11.6.1 User control of accessibility features
11.6.2 No disruption of accessibility features
11.7 User preferences
11.8 Authoring tools
11.8.1 Content technology
11.8.2 Accessible content creation
11.8.3 Preservation of accessibility information in transformations
11.8.4 Repair assistance
77 11.8.5 Templates
78 12 Documentation and support services
12.1 Product documentation
12.1.1 Accessibility and compatibility features
12.1.2 Accessible documentation
12.2 Support services
12.2.1 General (informative)
12.2.2 Information on accessibility and compatibility features
12.2.3 Effective communication
79 12.2.4 Accessible documentation
80 13 ICT providing relay or emergency service access
13.1 Relay services requirements
13.1.1 General (informative)
13.1.2 Text relay services
13.1.3 Sign relay services
13.1.4 Lip-reading relay services
13.1.5 Captioned telephony services
13.1.6 Speech to speech relay services
13.2 Access to relay services
81 13.3 Access to emergency services
82 Annex A (informative): Relationship between the present document and the essential requirements of Directive 2016/2102
90 Annex B (informative): Relationship between requirements and functional performance statements
B.1 Relationships between clauses 5 to 13 and the functional performance statements
98 Annex C (normative): Determination of compliance
C.1 Introduction
C.2 Empty clause
99 C.3 Empty clause
C.4 Functional performance
C.5 Generic requirements
C.5.1 Closed functionality
C.5.1.1 Introduction
C.5.1.2 General
C.5.1.2.1 Closed functionality
C.5.1.2.2 Assistive technology
C.5.1.3 Non-visual access
C.5.1.3.1 General
C.5.1.3.2 Auditory output delivery including speech
100 C.5.1.3.3 Auditory output correlation
C.5.1.3.4 Speech output user control
C.5.1.3.5 Speech output automatic interruption
C.5.1.3.6 Speech output for non-text content
C.5.1.3.7 Speech output for video information
C.5.1.3.8 Masked entry
101 C.5.1.3.9 Private access to personal data
C.5.1.3.10 Non-interfering audio output
C.5.1.3.11 Private listening volume
C.5.1.3.12 Speaker volume
C.5.1.3.13 Volume reset
102 C.5.1.3.14 Spoken languages
C.5.1.3.15 Non-visual error identification
C.5.1.3.16 Receipts, tickets and transactional outputs
C.5.1.4 Functionality closed to text enlargement
C.5.1.5 Visual output for auditory information
103 C.5.1.6 Operation without keyboard interface
C.5.1.6.1 Closed functionality
C.5.1.6.2 Input focus
C.5.2 Activation of accessibility features
C.5.3 Biometrics
C.5.4 Preservation of accessibility information during conversion
104 C.5.5 Operable parts
C.5.5.1 Means of operation
C.5.5.2 Operable part discernibility
C.5.6 Locking or toggle controls
C.5.6.1 Tactile or auditory status
C.5.6.2 Visual status
C.5.7 Key repeat
105 C.5.8 Double-strike key acceptance
C.5.9 Simultaneous user actions
C.6 ICT with two-way voice communication
C.6.1 Audio bandwidth for speech
C.6.2 Real-Time Text (RTT) functionality
C.6.2.1 RTT provision
C.6.2.1.1 RTT communication
106 C.6.2.1.2 Concurrent voice and text
C.6.2.2 Display of Real-Time Text
C.6.2.2.1 Visually distinguishable display
C.6.2.2.2 Programmatically determinable send and receive direction
107 C.6.2.3 Interoperability
C.6.2.4 Real-Time Text responsiveness
C.6.3 Caller ID
C.6.4 Alternatives to voice-based services
108 C.6.5 Video communication
C.6.5.1 General
C.6.5.2 Resolution
C.6.5.3 Frame rate
C.6.5.4 Synchronization between audio and video
C.6.6 Alternatives to video-based services
C.7 ICT with video capabilities
C.7.1 Caption processing technology
C.7.1.1 Captioning playback
109 C.7.1.2 Captioning synchronization
C.7.1.3 Preservation of captioning
C.7.2 Audio description technology
C.7.2.1 Audio description playback
C.7.2.2 Audio description synchronization
C.7.2.3 Preservation of audio description
C.7.3 User controls for captions and audio description
110 C.8 Hardware
C.8.1 General
C.8.1.1 Generic requirements
C.8.1.2 Standard connections
C.8.1.3 Colour
C.8.2 Hardware products with speech output
C.8.2.1 Speech volume gain
C.8.2.1.1 Speech volume range
C.8.2.1.2 Incremental volume control
111 C.8.2.2 Magnetic coupling
C.8.2.2.1 Fixed-line devices
C.8.2.2.2 Wireless communication devices
C.8.3 Physical access to ICT
C.8.3.1 General
C.8.3.2 Clear floor or ground space
C.8.3.2.1 Change in level
112 C.8.3.2.2 Clear floor or ground space
C.8.3.2.3 Approach
C.8.3.2.3.1 General
C.8.3.2.3.2 Forward Approach
C.8.3.2.3.3 Parallel Approach
C.8.3.2.4 Knee and toe clearance width
C.8.3.2.5 Toe clearance
113 C.8.3.2.6 Knee clearance
C.8.3.3 Reach range for ICT
C.8.3.3.1 Forward reach
C.8.3.3.1.1 Unobstructed high forward reach
C.8.3.3.1.2 Unobstructed low forward reach
114 C.8.3.3.1.3 Obstructed reach
C.8.3.3.2 Side reach
C.8.3.3.2.1 Unobstructed high side reach
C.8.3.3.2.2 Unobstructed low side reach
C.8.3.3.2.3 Obstructed side reach
115 C.8.3.4 Visibility
C.8.3.5 Installation instructions
C.8.4 Mechanically operable parts
C.8.4.1 Numeric keys
C.8.4.2 Operation of mechanical parts
C.8.4.2.1 Means of operation of mechanical parts
C.8.4.2.2 Force of operation of mechanical parts
116 C.8.4.3 Keys, tickets and fare cards
C.8.5 Tactile indication of speech mode
C.9 Web
C.9.0 General (informative)
C.9.1 Perceivable
C.9.1.1 Text alternatives
C.9.1.1.1 Non-text content
C.9.1.2 Time-based media
C.9.1.2.1 Audio-only and video-only (pre-recorded)
C.9.1.2.2 Captions (pre-recorded)
117 C.9.1.2.3 Audio description or media alternative (pre-recorded)
C.9.1.2.4 Captions (live)
C.9.1.2.5 Audio description (pre-recorded)
C.9.1.3 Adaptable
C.9.1.3.1 Info and relationships
C.9.1.3.2 Meaningful sequence
C.9.1.3.3 Sensory characteristics
C.9.1.3.4 Orientation
118 C.9.1.3.5 Identify input purpose
C.9.1.4 Distinguishable
C.9.1.4.1 Use of colour
C.9.1.4.2 Audio control
C.9.1.4.3 Contrast (minimum)
C.9.1.4.4 Resize text
C.9.1.4.5 Images of text
C.9.1.4.6 Void
C.9.1.4.7 Void
C.9.1.4.8 Void
C.9.1.4.9 Void
119 C.9.1.4.10 Reflow
C.9.1.4.11 Non-text contrast
C.9.1.4.12 Text spacing
C.9.1.4.13 Content on hover or focus
C.9.2 Operable
C.9.2.1 Keyboard accessible
C.9.2.1.1 Keyboard
C.9.2.1.2 No keyboard trap
C.9.2.1.3 Void
120 C.9.2.1.4 Character key shortcuts
C.9.2.2 Enough time
C.9.2.2.1 Timing adjustable
C.9.2.2.2 Pause, stop, hide
C.9.2.3 Seizures and physical reactions
C.9.2.3.1 Three flashes or below threshold
C.9.2.4 Navigable
C.9.2.4.1 Bypass blocks
C.9.2.4.2 Page titled
121 C.9.2.4.3 Focus Order
C.9.2.4.4 Link purpose (in context)
C.9.2.4.5 Multiple ways
C.9.2.4.6 Headings and labels
C.9.2.4.7 Focus visible
C.9.2.5 Input modalities
C.9.2.5.1 Pointer gestures
C.9.2.5.2 Pointer cancellation
122 C.9.2.5.3 Label in name
C.9.2.5.4 Motion actuation
C.9.3 Understandable
C.9.3.1 Readable
C.9.3.1.1 Language of page
C.9.3.1.2 Language of parts
C.9.3.2 Predictable
C.9.3.2.1 On focus
C.9.3.2.2 On input
123 C.9.3.2.3 Consistent navigation
C.9.3.2.4 Consistent identification
C.9.3.3 Input assistance
C.9.3.3.1 Error identification
C.9.3.3.2 Labels or instructions
C.9.3.3.3 Error suggestion
C.9.3.3.4 Error prevention (legal, financial, data)
124 C.9.4 Robust
C.9.4.1 Compatible
C.9.4.1.1 Parsing
C.9.4.1.2 Name, role, value
C.9.4.1.3 Status messages
C.9.5 WCAG 2.1 conformance requirements
C.10 Non-web documents
C.10.0 General (informative)
125 C.10.1 Perceivable
C.10.1.1 Text alternatives
C.10.1.1.1 Non-text content
C.10.1.2 Time-based media
C.10.1.2.1 Audio-only and video-only (pre-recorded)
C.10.1.2.2 Captions (pre-recorded)
C.10.1.2.3 Audio description or media alternative (pre-recorded)
C.10.1.2.4 Captions (live)
126 C.10.1.2.5 Audio description (pre-recorded)
C.10.1.3 Adaptable
C.10.1.3.1 Info and relationships
C.10.1.3.2 Meaningful sequence
C.10.1.3.3 Sensory characteristics
C.10.1.3.4 Orientation
C.10.1.3.5 Identify input purpose
C.10.1.4 Distinguishable
C.10.1.4.1 Use of colour
127 C.10.1.4.2 Audio control
C.10.1.4.3 Contrast (minimum)
C.10.1.4.4 Resize text
C.10.1.4.5 Images of text
C.10.1.4.6 Void
C.10.1.4.7 Void
C.10.1.4.8 Void
C.10.1.4.9 Void
C.10.1.4.10 Reflow
128 C.10.1.4.11 Non-text contrast
C.10.1.4.12 Text spacing
C.10.1.4.13 Content on hover or focus
C.10.2 Operable
C.10.2.1 Keyboard accessible
C.10.2.1.1 Keyboard
C.10.2.1.2 No keyboard trap
C.10.2.1.3 Void
C.10.2.1.4 Character key shortcuts
129 C.10.2.2 Enough time
C.10.2.2.1 Timing adjustable
C.10.2.2.2 Pause, stop, hide
C.10.2.3 Seizures and physical reactions
C.10.2.3.1 Three flashes or below threshold
C.10.2.4 Navigable
C.10.2.4.1 Void
C.10.2.4.2 Document titled
C.10.2.4.3 Focus order
C.10.2.4.4 Link purpose (in context)
130 C.10.2.4.5 Void
C.10.2.4.6 Headings and labels
C.10.2.4.7 Focus visible
C.10.2.5 Input modalities
C.10.2.5.1 Pointer gestures
C.10.2.5.2 Pointer cancellation
C.10.2.5.3 Label in name
C.10.2.5.4 Motion actuation
131 C.10.3 Understandable
C.10.3.1 Readable
C.10.3.1.1 Language of document
C.10.3.1.2 Language of parts
C.10.3.2 Predictable
C.10.3.2.1 On focus
C.10.3.2.2 On input
C.10.3.2.3 Void
C.10.3.2.4 Void
C.10.3.3 Input assistance
C.10.3.3.1 Error identification
C.10.3.3.2 Labels or instructions
132 C.10.3.3.3 Error suggestion
C.10.3.3.4 Error prevention (legal, financial, data)
C.10.4 Robust
C.10.4.1 Compatible
C.10.4.1.1 Parsing
C.10.4.1.2 Name, role, value
C.10.4.1.3 Void
C.10.5 Caption positioning
C.10.6 Audio description timing
C.11 Software
C.11.0 General
133 C.11.1 Perceivable
C.11.1.1 Text alternatives
C.11.1.1.1 Non-text content
C.11.1.1.1.1 Non-text content (screen reading supported open functionality)
C.11.1.1.1.2 Non-text content (closed functionality)
C.11.1.2 Time-based media
C.11.1.2.1 Audio-only and video-only (pre-recorded)
C.11.1.2.1.1 Audio-only and video-only (pre-recorded – open functionality)
134 C.11.1.2.1.2 Audio-only and video-only (pre-recorded – closed functionality)
C.11.1.2.1.2.1 Pre-recorded audio-only (closed functionality)
C.11.1.2.1.2.2 Pre-recorded video-only (closed functionality)
C.11.1.2.2 Captions (pre-recorded)
C.11.1.2.3 Audio description or media alternative (pre-recorded)
C.11.1.2.3.1 Audio description or media alternative (pre-recorded – open functionality)
C.11.1.2.3.2 Audio description or media alternative (pre-recorded – closed functionality)
135 C.11.1.2.4 Captions (live)
C.11.1.2.5 Audio description (pre-recorded)
C.11.1.3 Adaptable
C.11.1.3.1 Info and relationships
C.11.1.3.1.1 Info and relationships (open functionality)
C.11.1.3.1.2 Info and relationships (closed functionality)
C.11.1.3.2 Meaningful sequence
C.11.1.3.2.1 Meaningful sequence (open functionality)
C.11.1.3.2.2 Meaningful sequence (closed functionality)
C.11.1.3.3 Sensory characteristics
136 C.11.1.3.4 Orientation
C.11.1.3.5 Identify input purpose
C.11.1.4 Distinguishable
C.11.1.4.1 Use of colour
C.11.1.4.2 Audio control
C.11.1.4.3 Contrast (minimum)
C.11.1.4.4 Resize text
C.11.1.4.4.1 Resize text (open functionality)
137 C.11.1.4.4.2 Resize text (closed functionality)
C.11.1.4.5 Images of text
C.11.1.4.5.1 Images of text (open functionality)
C.11.1.4.5.2 Images of text (closed functionality)
C.11.1.4.6 Void
C.11.1.4.7 Void
C.11.1.4.8 Void
C.11.1.4.9 Void
C.11.1.4.10 Reflow
C.11.1.4.10.1 Reflow (open functionality)
C.11.1.4.10.2 Reflow (closed functionality)
138 C.11.1.4.11 Non-text contrast
C.11.1.4.12 Text spacing
C.11.1.4.13 Content on hover or focus
C.11.2 Operable
C.11.2.1 Keyboard accessible
C.11.2.1.1 Keyboard
C.11.2.1.1.1 Keyboard (open functionality)
C.11.2.1.1.2 Keyboard (closed functionality)
C.11.2.1.2 No keyboard trap
139 C.11.2.1.3 Void
C.11.2.1.4 Character key shortcuts
C.11.2.1.4.1 Character key shortcuts (open functionality)
C.11.2.1.4.2 Character key shortcuts (closed functionality)
C.11.2.2 Enough time
C.11.2.2.1 Timing adjustable
C.11.2.2.2 Pause, stop, hide
C.11.2.3 Seizures and physical reactions
C.11.2.3.1 Three flashes or below threshold
C.11.2.4 Navigable
C.11.2.4.1 Void
C.11.2.4.2 Void
C.11.2.4.3 Focus order
140 C.11.2.4.4 Link purpose (in context)
C.11.2.4.5 Void
C.11.2.4.6 Headings and labels
C.11.2.4.7 Focus visible
C.11.2.5 Input modalities
C.11.2.5.1 Pointer gestures
C.11.2.5.2 Pointer cancellation
C.11.2.5.3 Label in name
141 C.11.2.5.4 Motion actuation
C.11.3 Understandable
C.11.3.1 Readable
C.11.3.1.1 Language of software
C.11.3.1.1.1 Language of software (open functionality)
C.11.3.1.1.2 Language of software (closed functionality)
C.11.3.1.2 Void
C.11.3.2 Predictable
C.11.3.2.1 On focus
C.11.3.2.2 On input
142 C.11.3.2.3 Void
C.11.3.2.4 Void
C.11.3.3 Input assistance
C.11.3.3.1 Error identification
C.11.3.3.1.1 Error identification (open functionality)
C.11.3.3.1.2 Error Identification (closed functionality)
C.11.3.3.2 Labels or instructions
C.11.3.3.3 Error suggestion
C.11.3.3.4 Error prevention (legal, financial, data)
143 C.11.4 Robust
C.11.4.1 Compatible
C.11.4.1.1 Parsing
C.11.4.1.1.1 Parsing (open functionality)
C.11.4.1.1.2 Parsing (closed functionality)
C.11.4.1.2 Name, role, value
C.11.4.1.2.1 Name, role, value (open functionality)
C.11.4.1.2.2 Name, role, value (closed functionality)
C.11.4.1.3 Void
C.11.5 Interoperability with assistive technology
C.11.5.1 Closed functionality
C.11.5.2 Accessibility services
C.11.5.2.1 Platform accessibility service support for software that provides a user interface
144 C.11.5.2.2 Platform accessibility service support for assistive technologies
C.11.5.2.3 Use of accessibility services
C.11.5.2.4 Assistive technology
C.11.5.2.5 Object information
C.11.5.2.6 Row, column, and headers
145 C.11.5.2.7 Values
C.11.5.2.8 Label relationships
C.11.5.2.9 Parent-child relationships
146 C.11.5.2.10 Text
C.11.5.2.11 List of available actions
C.11.5.2.12 Execution of available actions
C.11.5.2.13 Tracking of focus and selection attributes
147 C.11.5.2.14 Modification of focus and selection attributes
C.11.5.2.15 Change notification
C.11.5.2.16 Modifications of states and properties
148 C.11.5.2.17 Modifications of values and text
C.11.6 Documented accessibility usage
C.11.6.1 User control of accessibility features
C.11.6.2 No disruption of accessibility features
C.11.7 User preferences
149 C.11.8 Authoring tools
C.11.8.1 Content technology
C.11.8.2 Accessible content creation
C.11.8.3 Preservation of accessibility information in transformations
C.11.8.4 Repair assistance
150 C.11.8.5 Templates
C.12 Documentation and support services
C.12.1 Product documentation
C.12.1.1 Accessibility and compatibility features
C.12.1.2 Accessible documentation
C.12.2 Support services
C.12.2.1 General
C.12.2.2 Information on accessibility and compatibility features
151 C.12.2.3 Effective communication
C.12.2.4 Accessible documentation
C.13 ICT providing relay or emergency service access
C.13.1 Relay service requirements
C.13.1.1 General
C.13.1.2 Text relay services
C.13.1.3 Sign relay services
C.13.1.4 Lip-reading relay services
152 C.13.1.5 Captioned telephony services
C.13.1.6 Speech to speech relay services
C.13.2 Access to relay services
C.13.3 Access to emergency services
153 Annex D (informative): WCAG 2.1 AAA Success Criteria
154 History

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