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--- a/README.md
+++ b/README.md
@@ -1,2 +1,7 @@
 # Python-Pascals-Triangles
 Generates (and filters) Pascal's triangles just for you.
+Requires Python 2.7.
+
+If you want to find out how to use the code without the I/O access, look into main.py. It's only 32 lines, 
+which are 50% String and ~12% empty lines. the rest should be quite easily understanfdable code, even for beginners.
+Have Fun!