From e4b7ea12efcfb9f86e844a15f98e7f2e459bc442 Mon Sep 17 00:00:00 2001
From: Dmitry Astapov <dastapov@gmail.com>
Date: Thu, 14 Dec 2017 23:54:53 +0000
Subject: [PATCH] doc: --period refers to periodic expressions

---
 doc/lib.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/lib.m4 b/doc/lib.m4
index a86471ced..d613e8006 100644
--- a/doc/lib.m4
+++ b/doc/lib.m4
@@ -125,7 +125,7 @@ m4_define({{_reportingoptions_}}, {{
 : multiperiod/multicolumn report by year
 
 `-p --period=PERIODEXP`
-: set start date, end date, and/or reporting interval all at once (overrides the flags above)
+: set start date, end date, and/or reporting interval all at once using [period expressions](manual.html#period-expressions) syntax (overrides the flags above)
 
 `--date2`
 : match the secondary date instead (see command help for other effects)