document -m; correct formatting of -c.

Notes:
Mon Apr 10 12:11:07 EDT 2006 rsc
    Thanks.  The manual uses American spelling, for what it's worth.


Reference: /n/sources/patch/applied/rc-1-m
Date: Sat Apr  8 02:44:03 CES 2006
Signed-off-by: geoff@collyer.net
Reviewed-by: rsc

--- /sys/man/1/rc	Sat Apr  8 02:43:52 2006
+++ /sys/man/1/rc	Sat Apr  8 02:43:47 2006
@@ -7,7 +7,12 @@
 .B -srdiIlxepvV
 ]
 [
-.B -c command
+.B -c
+.I command
+]
+[
+.B -m
+.I initial
 ]
 [
 .I file
@@ -937,6 +942,14 @@
 reads commands from
 .BR $home/lib/profile ,
 if it exists, before reading its normal input.
+.TP
+.B -m
+Reads commands to initialise
+.I rc
+from
+.I initial
+instead of from
+.BR /rc/lib/rcmain .
 .TP
 .B -p
 A no-op.