diff --git a/apps/dsm/mods/mod_sys/Readme.mod_sys.txt b/apps/dsm/mods/mod_sys/Readme.mod_sys.txt
new file mode 100644
index 00000000..cf836974
--- /dev/null
+++ b/apps/dsm/mods/mod_sys/Readme.mod_sys.txt
@@ -0,0 +1,6 @@
+Actions: 
+ sys.mkdir(string dirname)
+
+Conditions: 
+ sys.file_exists(string fname)
+ sys.file_not_exists(string fname)