Learning CAPI

I am attempting to transition my graphics mind from CLIM 2.0 to CAPI.  I 
am making progress but am stumped by things in the input department.

I must be looking for help in all the wrong places in the CAPI manual. 
Attached is a simple program to display a rectangle (pinboard-object) in 
a TRACKING-PINBOARD-LAYOUT pane. There are three :LAYOUT-STYLES mention 
in the documentation. None of them appear to do anything but (via trace) 
call HIGHLIGHT-PINBOARD-OBJECT and UNHIGHLIGHT-PINBOARD-OBJECT as 
expected but there is no visible change in the displayed rectangle object.

Can someone verify the above and/or can someone tell me what it takes to 
make the documentation honest???

Thanks

Paul