add naming conventions

main.ml

@@ -20,6 +20,31 @@
  * DEALINGS IN THE SOFTWARE.
  *)
 
+(*
+	Conventions:
+	- e: expression (typed or untyped)
+	- c: class
+	- en: enum
+	- td: typedef (tdef)
+	- a: abstract
+	- an: anon
+	- tf: tfunc
+	- cf: class_field
+	- ef: enum_field
+	- t: type (t)
+	- ct: complex_type
+	- v: local variable (tvar)
+	- m: module (module_def)
+	- mt: module_type
+	- p: pos
+
+	"param" refers to type parameters
+	"arg" refers to function arguments
+	leading s_ means function returns string
+	trailing l means list (but we also use natural plurals such as "metas")
+	semantic suffixes may be used freely (e.g. e1, e_if, e')
+*)
+
 open Printf
 open Ast
 open Genswf