diff --git a/ast.go b/ast.go
index 46d338f..e545006 100644
--- a/ast.go
+++ b/ast.go
@@ -138,6 +138,7 @@ type If struct {
 	InnerCmds []*Command `@@* "}"`
 }
 
+// RptLoop stores any repeat loops encountered while parsing a script
 type RptLoop struct {
 	Pos       lexer.Position
 	Times     *int     `"repeat" @Number "times" "{"`
diff --git a/cmd/scpt/main.go b/cmd/scpt/main.go
index 795da4c..4f72e4b 100644
--- a/cmd/scpt/main.go
+++ b/cmd/scpt/main.go
@@ -27,6 +27,8 @@ func main() {
 	}
 	scpt.AddFuncs(scpt.FuncMap{
 		"print": scptPrint,
+		"display-dialog":  displayDialog,
+		"do-shell-script": doShellScript,
 	})
 	err = ast.Execute()
 	if err != nil {
diff --git a/defaults.go b/defaults.go
index 016ed1f..b6aa992 100644
--- a/defaults.go
+++ b/defaults.go
@@ -17,75 +17,29 @@ package scpt
 import (
 	"errors"
 	"fmt"
-	"github.com/gen2brain/dlgs"
-	"os"
-	"os/exec"
+	"strconv"
 )
 
-// Default function to display a dialog
-func displayDialog(args map[string]interface{}) (interface{}, error) {
-	// Get title
-	title, ok := args["title"]
-	if !ok {
-		return nil, errors.New("title not provided")
-	}
-	// Get unnamed argument as text
-	text, ok := args[""]
-	if !ok {
-		return nil, errors.New("text not provided")
-	}
-	// Display correct dialog based on given type
-	switch args["type"] {
-	case "yesno":
-		// Display yes or no dialog, returning bool based on user input
-		return dlgs.Question(fmt.Sprint(title), fmt.Sprint(text), true)
-	case "info":
-		// Display info dialog, returning bool based on success
-		return dlgs.Info(fmt.Sprint(title), fmt.Sprint(text))
-	case "error":
-		// Display error dialog, returning bool based on success
-		return dlgs.Error(fmt.Sprint(title), fmt.Sprint(text))
-	case "entry":
-		// Check if default text given
-		defaultText, ok := args["default"]
-		if !ok {
-			// Set to empty if not given
-			defaultText = ""
-		}
-		// Display entry dialog
-		input, _, err := dlgs.Entry(fmt.Sprint(title), fmt.Sprint(text), fmt.Sprint(defaultText))
-		// Return user input
-		return input, err
-	default:
-		// If type unknown, return error
-		return nil, fmt.Errorf("unknown dialog type: %v", args["type"])
-	}
-}
-
-// Default function to run a shell script using `sh -c`
-func doShellScript(args map[string]interface{}) (interface{}, error) {
-	// Get unnamed argument and assert its type as string
-	script, ok := args[""].(string)
-	// If assertion successful
-	if ok {
-		// Create new exec.Cmd containing `sh -c <script>`
-		cmd := exec.Command("sh", "-c", script)
-		// Set command I/O
-		cmd.Stdout = os.Stdout
-		cmd.Stdin = os.Stdin
-		cmd.Stderr = os.Stderr
-		// Run command
-		_ = cmd.Run()
-		return "", nil
-	} else {
-		return nil, errors.New("script not provided")
-	}
-}
-
 func toString(args map[string]interface{}) (interface{}, error) {
 	val, ok := args[""]
 	if !ok {
 		return nil, errors.New("no value provided")
 	}
 	return fmt.Sprint(val), nil
+}
+
+func parseNumber(args map[string]interface{}) (interface{}, error) {
+	val, ok := args[""].(string)
+	if !ok {
+		return nil, errors.New("no value provided")
+	}
+	return strconv.ParseFloat(val, 64)
+}
+
+func parseBool(args map[string]interface{}) (interface{}, error) {
+	val, ok := args[""].(string)
+	if !ok {
+		return nil, errors.New("no value provided")
+	}
+	return strconv.ParseBool(val)
 }
\ No newline at end of file
diff --git a/lexer.go b/lexer.go
index ca62611..7293982 100644
--- a/lexer.go
+++ b/lexer.go
@@ -12,6 +12,6 @@ var scptLexer = lexer.Must(stateful.NewSimple([]stateful.Rule{
 	{"Number", `(?:\d*\.)?\d+`, nil},
 	{"Punct", `[-[!@$&()_{}\|:;"',.?/]|]`, nil},
 	{"Whitespace", `[ \t\r\n]+`, nil},
-	{"Comment", `#[^\n]+`, nil},
+	{"Comment", `(###(.|\n)+###|#[^\n]+)`, nil},
 	{"Operator", `(>=|<=|>|<|==|!=)|[-+*/^%]`, nil},
 }))
diff --git a/scpt.go b/scpt.go
index 4816057..8221dca 100644
--- a/scpt.go
+++ b/scpt.go
@@ -34,9 +34,9 @@ type FuncMap map[string]func(map[string]interface{}) (interface{}, error)
 
 // Funcs stores the functions allowed for use in a script
 var Funcs = FuncMap{
-	"display-dialog":  displayDialog,
-	"do-shell-script": doShellScript,
-	"string": toString,
+	"str":          toString,
+	"num": parseNumber,
+	"bool": parseBool,
 }
 
 // AddFuncs adds all functions from the provided FuncMap into
diff --git a/test.scpt b/test.scpt
index 47b364d..d51d654 100644
--- a/test.scpt
+++ b/test.scpt
@@ -16,4 +16,16 @@ if {3 == 3} {
 
 repeat 5 times { z in
     print $z
-}
\ No newline at end of file
+}
+
+print (str 10.5)
+
+if (bool "true") {
+    print "True"
+}
+
+###
+This is a multiline comment
+###
+
+# This is a single line comment
\ No newline at end of file