"timing" = "time limit"?

Name: Makoto Ueki
Email: makoto.ueki@gmail.com
Affiliation: JIS Working Group
Document: W2
Item Number: Success Criterion 2.2.1
Part of Item: 
Comment Type: editorial
Summary of Issue: "timing" = "time limit"?
Comment (Including rationale for any proposed change):
The "Note" reads "While exceptions to Success Criterion 2.2.1 where timing is essential exist,". Does "timing" mean "time limit"?

Proposed Change:
Need explanation.