diff --git a/documentation/specification.md b/documentation/specification.md
index aadfd51..743f636 100644
--- a/documentation/specification.md
+++ b/documentation/specification.md
@@ -1,3 +1,6 @@
+# CRITICAL NOTES
++ flex might be total overkill as scanf might entirely suffice
+
 # Used technologies
 + C style C++ with pottential future "back" porting
 + flex history parsers