f\bfr\bro\bom\bmt\bto\bo-\b-n\bno\boa\bar\brg\bg - vertical stacking lacks final argument
D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
- initial text x_a^^ final text
+ initial text _\bx_(_\ba^)^ final text
-OpenBSD January 1, 2015 OpenBSD
+OpenBSD July 4, 2017 OpenBSD