Document the *_nice and other rc.conf variables?

[Ivan Voras]

Hello,

I'd like to commit this simple addition to the rc.conf man page, and
I'm wondering if these simple descriptions are ok, or is there
something else which needs to be said about the knobs?


Index: rc.conf.5
===================================================================
--- rc.conf.5   (revision 240388)
+++ rc.conf.5   (working copy)
@@ -168,6 +168,20 @@
 .Dq Li NO ,
 no swapfile is installed, otherwise the value is used as the full
 pathname to a file to use for additional swap space.
+.It Va Ns Ao Ar name Ac Ns Va _chroot
+.Pq Vt str
+The chroot directory to run the service in.
+.It Va Ns Ao Ar name Ac Ns Va _user
+.Pq Vt str
+The user to run the chrooted service as.
+.It Va Ns Ao Ar name Ac Ns Va _group
+.Pq Vt str
+The group to run the chrooted service as.
+.It Ns Ao Ar name Ac Ns Va _nice
+.Pq Vt int
+The
+.Xr nice 1
+value to run the service under.
 .It Va apm_enable
 .Pq Vt bool
 If set to