CHECKBOX [<orient:H,V>] TO <mvar> [MESSAGE <message>] ;
         [TITLE <title>] [WITH <nobuttons> BUTTONS] ;
         [CHOICES <choices>] [START <start>] ;
         AT [<top>], [<left>], [<bottom>], [<right>] ;
         [SHADOW <shadow>] [FRAME <frame>] [EXITKEY <exitkey>] ;
         [ACTIONKEYS <actionkeys>] ;
 ----------------------------------------------------------------------------

Purpose: A command replacement for twCheckBox()


Example: LOCAL avar
         LOCAL AText1 := "One function is used in TSDWIN " + ;
                         "to create various types of " + ;
                         "alert boxes: PushButton Boxes, " + ;
                         "Radio Boxes and Select Boxes. "

          CHECKBOX h TO avar MESSAGE AText1 TITLE "Checkbox() Trial" ;
             CHOICES {"Hi there ","want to go out","and",;
             "have a ball"} START 3 AT 3, 2, 18, 77 ;
             SHADOW 9 FRAME 10