[LTP] [PATCH 2/2] doc: Mention places for environment variables

[Petr Vorel]

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 doc/library-api-writing-guidelines.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/library-api-writing-guidelines.txt b/doc/library-api-writing-guidelines.txt
index c820536814..52e37d8c28 100644
--- a/doc/library-api-writing-guidelines.txt
+++ b/doc/library-api-writing-guidelines.txt
@@ -18,6 +18,10 @@ Library tests are in 'lib/newlib_tests' directory.
 
 Don't forget to update docs when you change the API.
 
+Environment variables should be listed in
+https://github.com/linux-test-project/ltp/wiki/User-Guidelines[LTP User Guidelines]
+and in help output (`-h`) for both C and shell API.
+
 2. C API
 --------
 
-- 
2.34.1