This patch adds consdebug to the plan9.ini man page.  This patch
depends on the previously submitted panic-rdb patch.
--- /n/sourcesdump/2012/0915/plan9/sys/man/8/plan9.ini	Thu May 10 23:30:45 2012
+++ /sys/man/8/plan9.ini	Sat Sep 15 00:00:00 2012
@@ -579,6 +579,11 @@
 .LP
 would use COM1 at 19,200 baud
 with odd parity.
+.SS \fLconsdebug=\fIvalue
+This is used to automatically enable console debugging on failure.
+This is equivalent to toggling
+.L ^T^Td
+and is primarily useful when debugging kernel issues at boot.
 .SS "PC CARD"
 .SS \fLpccard0=disabled\fP
 Disable probing for and automatic configuration of PC card controllers.