add DO LOOP

words.go

@@ -7,17 +7,19 @@ type Dictionary map[string]Word
 
 // A Word defines a subroutine
 type Word struct {
-	Name   string
-	Impl   func() error
-	Source []string
+	Name      string
+	Impl      func() error
+	Source    []string
+	Immediate bool
 }
 
 // AddWord inserts a new word into the dictonary, optionally overwriting the existing word
-func (d Dictionary) AddWord(name string, impl func() error, source []string) {
+func (d Dictionary) AddWord(name string, impl func() error, source []string, immediate bool) {
 	d[name] = Word{
-		Name:   name,
-		Impl:   impl,
-		Source: source,
+		Name:      name,
+		Impl:      impl,
+		Source:    source,
+		Immediate: immediate,
 	}
 }