Add some documentation

1 files changed, 7 insertions, 0 deletions

diff --git a/fref.lex b/fref.lex
index 8d640ae..bc26dc7 100644
--- a/fref.lex
+++ b/fref.lex
@@ -1,3 +1,10 @@
+/*
+ * fref creates troff-formatted references according to specifications
+ * given on standard in. The specification syntax is similar to that of
+ * refer, but differs in that all identifiers are two letters instead of
+ * one (like troff itself). This allows for a larger number of fields.
+ */
+
 	#include <err.h>
 	#include <stdarg.h>