lsfd: (adoc) write more about the -o option

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

diff --git a/misc-utils/lsfd.1.adoc b/misc-utils/lsfd.1.adoc
index 91be0e1023805837d774655912b9e39b6cb7ba74..b168ca3d59c1be2d8bbc72c913f4243fe9b31fa0 100644 (file)
--- a/misc-utils/lsfd.1.adoc
+++ b/misc-utils/lsfd.1.adoc
@@ -42,8 +42,11 @@ Use JSON output format.
 Don't print headings.
 
 *-o*, *--output* _list_::
-Output columns.
-See the "OUTPUT COLUMNS" section for details of available column.
+Specify which output columns to print. See the "OUTPUT COLUMNS"
+section for details of available column.
++
+The default list of columns may be extended if _list_ is specified in
+the format _+list_ (e.g., *lsfd -o +DELETED*).
 
 *-r*, *--raw*::
 Use raw output format.