Right click on the level ( ) on the tree and choose "Properties."
• Label
This is descriptive text that helps you identify the current level. It may contain any characters (including blanks) and be up to 120 characters long.
• Name
This is the name of the level which you would use when writing programming logic. It must consist of letters, digits and the underscore ('_') character. It must not begin or end with underscore.
You can see either labels or names on the forms tree. Press Ctrl+T to switch back and forth between them.