ldattach(8) on OpenBSD
The text 0737ab2a0886, as OpenBSD 5.6, OpenBSD 5.5, OpenBSD 5.4, OpenBSD 5.3, OpenBSD 5.2, OpenBSD 5.1, OpenBSD 5.0, OpenBSD 4.9, OpenBSD 4.8 shipped it.
attach a line discipline to a serial line
Flags it lists
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-2 -
-7 -
-d -
-e -
-h -
-m -
-o -
-p -
-s -
-t