"Protocol" requirement - Cancel request

Summary - Web applications must be able to cancel speech requests which
have not completed.

 

Description - This requirement does not imply that the UA or SS behave
as if the operation never occurred, only that continued processing
terminates on a reasonable timeline once the cancel request has been
received.  This feature is necessary for common speech operations like
bargein.  For example, the web app must be able to interrupt synthesis
if speech is detected, and must be able to terminate speech detection if
the user doesn't respond in a timely manner.