Note: Occasionally you may get notification that a page has changed but you will find no changes, not even an increase in the revision number. This can happen if someone makes a change and then, within one hour of the original change, edits again and reverts the changes (restores the document to its condition prior to the first changes).

At other times, you may get notification of a change and see an increase in revision number, but see little or no change:

• If someone makes a change that consists only of adding or deleting spaces between words (but not combining two words into one, or breaking one word into two), the revision number will increase but you may not be able to find the change, even in the diff.
• If someone makes a change that consists only of adding or deleting extra lines between existing lines, the revision number will increase; but, when looking at the page in view mode, you may not see any difference. You will see some evidence of the change if you view a diff.

Finally, if someone makes edits consisting of added spaces or extra lines (as described above), but makes successive changes before the one hour lockout expires, and you view the page between edits, you may not see an increase in revision number or any evidence of the change in diff. (Haven't tested this one, but I believe it is correct.)

-- RandyKramer - 21 Jan 2002

I guess that we could ask TWiki to check for changes only in whitespace and automatically tick the 'minor changes, don't notify' checkbox.

-- MartinCleaver - 21 Jan 2002

Yes, I suppose so -- don't know if it's really worth doing, unless part of some bigger effort to resolve all issues around change notification. See ChangesProject and RevisionProblemsSummary.

-- RandyKramer - 22 Jan 2002