log-edit-set-header

log-edit-set-header is a compiled Lisp function in `log-edit.el'.

(log-edit-set-header HEADER VALUE &optional TOGGLE)

Set the value of HEADER to VALUE in the current buffer.
If TOGGLE is non-nil, and the value of HEADER already is VALUE,
clear it. Make sure there is an empty line after the headers.
Return t if toggled on (or TOGGLE is nil), otherwise nil.