diff --git a/README.md b/README.md
index a8e2e17..b477b7d 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,9 @@
-# fcl
-Forth Calculator's Language
+# FCL - Forth Calculator's Language
+
+FCL is the programming language of an Android app called Forth Calculator. It is a Forth dialect with optional local variables, complex data structures, quotations and Java interoperability.
+
+
+```forth
+: fib ( n1 n2 -- n1 n2 n3 ) 2dup + ;
+: nfib ( n -- .. ) -> n 0 1 n { fib } times ;
+```