




Removes the highlighting from a pinboard-object.
The function unhighlight-pinboard-object removes the highlighting from a pinboard object if necessary, and then if 
redisplay
 is non-nil it redisplays it. The default value of 
redisplay
 is t. 
To highlight a pinboard object use highlight-pinboard-object.
The returned value was-highlighted-p is true if object was highlighted before the call.
CAPI User Guide and Reference Manual (Windows version) - 3 Aug 2017