Help: /wdiff
Bounty program for improvements to Tcl and certain Tcl packages.
Tcl 2019 Conference, Houston/TX, US, Nov 4-8
Send your abstracts to tclconference@googlegroups.com
or submit via the online form by Sep 9.

The "/wdiff" page:

Show the changes to a wiki page.

Query parameters:

id=HASH
Hash prefix for the child version to be diffed.
rid=INTEGER
RecordID for the child version
pid=HASH
Hash prefix for the parent.

The "id" query parameter is required. "pid" is optional. If "pid" is omitted, then the diff is against the first parent of the child.