--- a/usr/src/man/man9f/canputnext.9f	Tue Dec 16 06:22:02 2014 -0800
+++ b/usr/src/man/man9f/canputnext.9f	Tue Dec 16 06:24:14 2014 -0800
@@ -11,7 +11,7 @@
 .\"
 .\" Copyright 2014 Garrett D'Amore <garrett@damore.org>
 .\"
-.Dd "Dec 3, 2014"
+.Dd "Dec 15, 2014"
 .Dt CANPUTNEXT 9F
 .Os
 .Sh NAME
@@ -37,12 +37,15 @@
 .Fn canputnext
 and
 .Fn bcanputnext
-functions are functionality equivalent, and preferable to calling
+functions atomically test for available space in the next
+linked queue or priority band.
+They are preferable to and safer than calling
 .Xr canput 9F
 and
 .Xr bcanput 9F
-with the queue linked to by
+directly on the the queue linked to by
 .Fa q Ns No -> Ns Fa q_next .
+.Lp
 Drivers and modules should call these routines to ensure that room
 on the next queue exists before calling
 .Xr putnext 9F .
@@ -51,16 +54,19 @@
 .Sh PARAMETERS
 .Bl -tag -width Ds
 .It Fa q
-STREAMs queue.
+STREAMS queue.
 .It Fa pri
 Priority band to test.
 .El
+.Sh CONTEXT
+These functions may be called in user, kernel, or interrupt
+context.
 .Sh RETURN VALUES
 .Bl -tag -width Ds
 .It 1
 If the next message queue is not full.
 .It 0
-If the next message is full.
+If the next message queue is full.
 .El
 .Sh SEE ALSO
 .Rs