Index: usr.bin/ktrace/ktrace.1
===================================================================
--- usr.bin/ktrace/ktrace.1
+++ usr.bin/ktrace/ktrace.1
@@ -48,9 +48,13 @@
 utility enables kernel trace logging for the specified processes.
 Kernel trace data is logged to the file
 .Pa ktrace.out .
-The kernel operations that are traced include system calls,
-.Xr namei 9
-translations, signal processing, and
+The kernel operations that are traced include system calls
+.Pq see Xr intro 2 ,
+file system path lookups
+.Pq Xr namei 9 ,
+signal processing
+.Pq Xr sigaction 2 ,
+and
 .Tn I/O .
 .Pp
 Once tracing is enabled on a process, trace data will be logged until
@@ -198,7 +202,9 @@
 .Xr dtrace 1 ,
 .Xr kdump 1 ,
 .Xr truss 1 ,
+.Xr intro 2 ,
 .Xr ktrace 2 ,
+.Xr sigaction 2 ,
 .Xr utrace 2 ,
 .Xr capsicum 4 ,
 .Xr namei 9