locking with a timeout.
.PP
The
+.B env
+module manipulates environment variables stored in a hashtable, and
+converts between the hashtable and the standard array representation of
+a process environment.
+.PP
+The
+.B fdflags
+module manipulates file descriptor flags in a fairly painless way.
+.PP
+The
.B lbuf
module implements a `line buffer', which is an object that emits
completed lines of text from an incoming asynchronous data stream. It's
.BR crc32 (3),
.BR dspool (3),
.BR dstr (3),
+.BR env (3),
.BR exc (3),
+.BR fdflags (3),
.BR lbuf (3),
.BR lock (3),
.BR mdwopt (3),