titlebar=yes|sysmenu|minmax|both|none
scroll=horizontal|vertical|both|none
rules=border|sizeborder|none
You can eliminate window controls altogether by specifying:
titlebar=none scroll=none rules=none
You then can substitute controls of your own. By eliminating borders around windows and using :font. to specify fonts, you can design a more sophisticated layout of text and graphics. The OS/2 system tutorial is an example of this.
For information about the tags that control the display of push buttons, see Attribute Values for the Control Area of a Window.