The "/ci_edit" page:
Edit a check-in.  (Check-ins are immutable and do not really change.
This page really creates supplemental tags that affect the display
of the check-in.)
Query parameters:
- rid=INTEGER
 - Record ID of the check-in to edit (REQUIRED)
 
POST parameters after pressing "Preview", "Cancel", or "Apply":
- c=TEXT
 - New check-in comment
 - u=TEXT
 - New user name
 - newclr
 - Apply a background color
 - clr=TEXT
 - New background color (only if newclr)
 - pclr
 - Propagate new background color (only if newclr)
 - dt=TEXT
 - New check-in date/time (ISO8610 format)
 - newtag
 - Add a new tag to the check-in
 - tagname=TEXT
 - Name of the new tag to be added (only if newtag)
 - newbr
 - Put the check-in on a new branch
 - brname=TEXT
 - Name of the new branch (only if newbr)
 - close
 - Close this check-in
 - hide
 - Hide this check-in
 - cNNN
 - Cancel tag with tagid=NNN
 
- cancel
 - Cancel the edit. Return to the check-in view
 - preview
 - Show a preview of the edited check-in comment
 - apply
 - Apply changes