Add some comments

2 files changed, 5 insertions, 0 deletions

diff --git a/lex/parse.go b/lex/parse.go
index ebd4dda..e105a22 100644
--- a/lex/parse.go
+++ b/lex/parse.go
@@ -6,6 +6,10 @@ import (
 	"strings"
 )
 
+//Parse walks through the lex file, which contains the element of a screenplay,
+//optionally followed by a colon and space and the actual contents of that element.
+//Special elements exist: newpage, titlepage and metasection.
+//These elements trigger pdf creation instructions.
 func Parse(file io.Reader) (out Screenplay) {
 	f := bufio.NewReader(file)
 	var err error
diff --git a/lex/type.go b/lex/type.go
index 3b49eee..eec2f3e 100644
--- a/lex/type.go
+++ b/lex/type.go
@@ -1,3 +1,4 @@
+// The lex format is basically a parse tree for screenplays, which enables quick debugging.
 package lex
 
 type Screenplay []Line