1 files changed, 5 insertions, 0 deletions
diff --git a/tit4tat.pl b/tit4tat.pl
index 47d8535..2cf520c 100644
--- a/tit4tat.pl
+++ b/tit4tat.pl
@@ -1,3 +1,8 @@
+% Tit for Tat:
+% Begins with cooperation and then plays what its opponent played in the last
+% move (if the opponent defects in some round, Tit for Tat will defect in the
+% following one; to cooperation it responds with cooperation).
+
 % Syntax: MODULE(UserDecisionHistry [in], ModuleDecision [out])
 
 % Use opponents last decision