From 90dc6b94d0b651069afb52174635ead1b8b5ed08 Mon Sep 17 00:00:00 2001
From: Vladimir Prus <ghost@cs.msu.su>
Date: Wed, 11 Jul 2007 19:37:51 +0000
Subject: [PATCH] Clarify comment

[SVN r38190]
---
 src/value_semantic.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/value_semantic.cpp b/src/value_semantic.cpp
index 0cdf699..4d1e133 100644
--- a/src/value_semantic.cpp
+++ b/src/value_semantic.cpp
@@ -122,8 +122,8 @@ namespace boost { namespace program_options {
     /* Validates bool value.
         Any of "1", "true", "yes", "on" will be converted to "1".<br>
         Any of "0", "false", "no", "off" will be converted to "0".<br>
-        Case is ignored. Regardless of name passed, parameter will always
-        be optional.
+        Case is ignored. The 'xs' vector can either be empty, in which
+        case the value is 'true', or can contain explicit value.
     */
     BOOST_PROGRAM_OPTIONS_DECL void validate(any& v, const vector<string>& xs,
                        bool*, int)