Visual MAXScript Utility (See MAXScript Reference)

Utilities panel > Utilities rollout > More button > Visual MAXScript

Visual MAXScript is a powerful interface to the scripting language, making the MAXScript feature easier to learn and use. With Visual MAXScript, you can quickly create UI elements and layouts for scripting.

For detailed information about Visual MAXScript, open the MAXScript Reference, available from Help menu > MAXScript Reference