rs(1) on OpenBSD
The text 05b67944e0b6, as OpenBSD 6.0, OpenBSD 5.9 shipped it.
reshape a data array
Flags it lists
-
-C -
-E -
-G -
-H -
-K -
-S -
-T -
-c -
-e -
-g -
-h -
-j -
-k -
-m -
-n -
-s -
-t -
-w -
-y -
-z