diff --git a/pkg/shsh/token.go b/pkg/shsh/token.go
index ed13203..3438006 100644
--- a/pkg/shsh/token.go
+++ b/pkg/shsh/token.go
@@ -7,6 +7,17 @@ import (
 
 type operation func(Token) Token
 
+/*
+ * LIST: a list of elements
+ * OPERAND: an element which is 
+ */
+type parse_tag enum {
+    LIST_T      iota
+    OPERAND_T   iota
+    OPERATOR_T  iota
+    OPERATION_T iota
+}
+
 type Token struct {
     Token *next
     interface{} *_inner
@@ -42,9 +53,13 @@ func lex(string input) string {
 }
 
 func parse(Token *arg) {
-
+    // if operand determine if operator
+    // determine operator precense in symbol table
+    // Determine if a list is an operation or a list
 }
 
 func eval(Token *tree) Token* {
-
+    // Find operations
+    // Simplify operations deepest first
+    // return tree of final Tokens
 }