xBUTTON    L T W H Title

Specifies a Button Type gadget, at (L)eft, (T)op and of size
(W)idth, (H)eight with the "Title" text on it.

Example :

xButton  10 20 100 15 "My Button"

Buttons are buttons - you just press them and they do their commands
Icons (xICON) can be used in exactly the same way.

Example :  Run Gui   Source