diff --git a/tcl.go b/tcl.go
index 47d7747..4bddee3 100644
--- a/tcl.go
+++ b/tcl.go
@@ -8,15 +8,15 @@ import (
 	. "github.com/oec/goparsify"
 )
 
-// Tcl parser, using combinators
-// Based on the grammer in:
-// https://wiki.tcl-lang.org/page/BNF+for+Tcl
+// Tcl tokenizer parser, using combinators
 
 var (
-	word    Parser
-	words   Parser
-	command Parser
-	script  Parser
+	word       Parser
+	words      Parser
+	subcommand Parser
+	command    Parser
+	ltm        Parser
+	script     Parser
 )
 
 var (
@@ -25,14 +25,19 @@ var (
 	wordSub = NewParser("[*]word", Seq("[*]", &word)).Map(resultchild(1))
 	wordQtd = NewParser(`"word"`, StringLit(`"`)).Map(token)
 	wordSmp = NewParser("simple", NotChars("{} \t\r\n")).Map(token)
-	group   = NewParser("{group}", Seq("{", Maybe(Chars("\r\n")), Some(Any(&command, &words)), "}")).Map(func(r *Result) { collectchildren(&r.Child[2]); r.Result = r.Child[2].Result })
+	group   = NewParser("{group}", Seq("{", Maybe(Chars("\r\n")), Some(Any(&subcommand, &words)), "}")).Map(func(r *Result) {
+		collectchildren(&r.Child[2])
+		r.Result = r.Child[2].Result
+	})
 )
 
 func init() {
 	word = NewParser("word", Any(&wordQtd, &group, &wordSmp, &wordSub, &wordExp))
 	words = NewParser("words", Many(&word)).Map(collectchildren)
-	command = NewParser("command", Seq(&words, Any(";", Chars("\r\n")))).Map(resultchild(0))
-	script = NewParser("script", Many(Any(&comment, &command))).Map(collectchildren)
+	subcommand = NewParser("subcommand", Seq(&words, Any(";", Chars("\r\n")))).Map(resultchild(0))
+	command = NewParser("command", subcommand).Map(resultchild(0))
+	script = NewParser("script", Many(Any(&comment, &ltm, &command))).Map(collectchildren)
+	ltm = NewParser("ltm", Seq("ltm", subcommand)).Map(resultchild(1))
 }
 
 func simpleWhitespace(s *State) {
@@ -75,18 +80,13 @@ func token(r *Result) {
 }
 
 func collectchildren(r *Result) {
-	data := []string{}
+	data := []interface{}{}
 	for _, ch := range r.Child {
 		switch v := ch.Result.(type) {
-		case string:
+		case string, []string, []interface{}:
 			data = append(data, v)
-		case []string:
-			data = append(data, v...)
-		default:
-			// log.Println("oops:", r)
 		}
 	}
-	// log.Println("data: ", data)
 	r.Result = data
 }