cperl-indent-region is an interactive compiled Lisp function in `cperl-mode.el'.

(cperl-indent-region START END)

Simple variant of indentation of region in CPerl mode.
Should be slow. Will not indent comment if it starts at `comment-indent'
or looks like continuation of the comment on the previous line.
Indents all the lines whose first character is between START and END

If `cperl-indent-region-fix-constructs', will improve spacing on
conditional/loop constructs.