an example can be found on AMOSPro_Examples:Examples/H-3/Help_33.AMOS
Sets the style of a slider bar created with VSLIDER or HSLIDER.
Set Slider bink,bpaper,bout, bpatt,sink, spaper,sout,spatt
bink,bpaper,bout enter the colours for the ink,paper, and outline of the slider.
bpattern specifies the fill pattern to be used.
sink,spaper,sout,spatt define the appearance of the slider box inside.