Guideline A.3.2: (For the authoring tool user interface) Provide authors with enough time.
[Implementing A.3.2] http://www.w3.org/TR/2015/NOTE-IMPLEMENTING-ATAG20-20150924/#gl_a32
Rationale: Some authors who have difficulty typing, operating the mouse, or processing information can be prevented from using systems with short time limits or that require fast reaction speeds, such as clicking on a moving target.
A.3.2.1 Auto-Save (Minimum): The authoring tool does not include session time limits or the authoring tool can automatically save edits made before the session time limits are reached. (Level A)
Implementing A.3.2.1
A.3.2.2 Timing Adjustable: The authoring tool does not include time limits or at least one of the following is true: (Level A)
(a) Turn Off: Authors are allowed to turn off the time limit before encountering it; or
(b) Adjust: Authors are allowed to adjust the time limit before encountering it over a wide range that is at least ten times the length of the default setting; or
(c) Extend: Authors are warned before time expires and given at least 20 seconds to extend the time limit with a simple action (e.g. "press the space bar"), and authors are allowed to extend the time limit at least ten times; or
(d) Real-time Exception: The time limit is a required part of a real-time event (e.g. a collaborative authoring system), and no alternative to the time limit is possible; or
(e) Essential Exception: The time limit is essential and extending it would invalidate the activity; or
(f) 20 Hour Exception: The time limit is longer than 20 hours.
Implementing A.3.2.2
A.3.2.3 Static Input Components: The authoring tool does not include moving user interface components that accept input where the movement of these components cannot be paused by authors. (Level A)
Implementing A.3.2.3
A.3.2.4 Content Edits Saved (Extended): The authoring tool can be set to automatically save web content edits made using the authoring tool. (Level AAA)
Implementing A.3.2.4