Add short description of the manpage.

diff --git a/libarchive/archive_write_filter.3 b/libarchive/archive_write_filter.3
index 869dc46b6977375151eb1566699bc0490d3fd232..e1d1891506449765b48a6bbd48c8e9d43329e4ca 100644 (file)
--- a/libarchive/archive_write_filter.3
+++ b/libarchive/archive_write_filter.3
@@ -43,6 +43,7 @@
 .Nm archive_write_add_filter_program ,
 .Nm archive_write_add_filter_uuencode ,
 .Nm archive_write_add_filter_xz
+.Nd functions enabling output filters
 .Sh LIBRARY
 Streaming Archive Library (libarchive, -larchive)
 .Sh SYNOPSIS