Planimeter(1) on Linux
The text 3aa2dc3ef125, as Debian 7 (Wheezy) shipped it.
Flags it lists
-
--comment-delimiter -
--help -
--input-file -
--input-string -
--line-separator -
--output-file -
--version -
-e -
-h -
-l -
-r -
-s