1 files changed, 8 insertions, 1 deletions

diff --git a/README.md b/README.md
index d396e4f..07fcaef 100644
--- a/README.md
+++ b/README.md
@@ -10,4 +10,11 @@ For example here is the path to sublime text folder in my Linux: `~/.config/subl
 
 # Screenshot:
 
-![](syntax-screenshot.png)
\ No newline at end of file
+![](syntax-screenshot.png)
+![](syntax-screenshot2.png)
+
+# Useful links:
+
+* [groff](https://www.gnu.org/software/groff/manual/groff.html)
+* [Oniguruma Regular Expressions Version 5.9.1](https://raw.githubusercontent.com/kkos/oniguruma/5.9.6/doc/RE)
+* [Sublime text syntax](http://www.sublimetext.com/docs/syntax.html)