Variable: f90-comment-region
f90-comment-region is a customizable variable defined in f90.el.gz.
Value
"!!$"
Documentation
String inserted by M-x f90-comment-region (f90-comment-region) at start of each line in region.
Key Bindings
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/f90.el.gz
(defcustom f90-comment-region "!!$"
"String inserted by \\[f90-comment-region] at start of each line in region."
:type 'string
:safe 'stringp
:group 'f90-indent)