"Preview" and "References" are both docked to the bottom of the main window - two tabs in the same pane.
I've got two headers with a bunch of duplicate #defines I'm trying to resolve.
In H1.h:
#define BLAT 123
In H2.h
#define BLAT 456
Put the cursor on BLAT in H1, and do Ctrl+/ (push-ref).
A "Select Symbol" dialog appears listing BLAT in H1.h and H2.h.
If I select the definition in H1, then the "Preview" tool window is activated.
If I select the definition in H2, then the "References" tool window is activated.
And likewise, If I put the cursor on BLAT in H2, then the activated tool window is reversed.
Seems like, no matter which symbol, Slick oughta activate the same tool window.