Some man pages.
diff --git a/man/man3/dup.3 b/man/man3/dup.3
index e3cee43..3c7312d 100644
--- a/man/man3/dup.3
+++ b/man/man3/dup.3
@@ -25,18 +25,14 @@
for the new file descriptor
(closing any old file associated with
.IR newfd ).
-File descriptors are allocated dynamically,
-so to prevent unwarranted growth of the file descriptor table,
-.I dup
-requires that
-.I newfd
-be no greater than 20 more than the highest file descriptor ever used by
-the program.
.SH SOURCE
-.B /usr/local/plan9/src/libc/9syscall
-.SH SEE ALSO
-.IR intro (3),
-.IR dup (3)
+.B /usr/local/plan9/src/lib9/dup.c
.SH DIAGNOSTICS
Sets
.IR errstr .
+.SH BUGS
+.I Dup
+is a macro for
+.I p9dup
+to avoid name conflicts with the Unix function; see
+.IR intro (3).
