[racket] Quarter-circle in upper right of Definitions window?

It will appear when the online check syntax finds some documentation
for the identifier at the insertion point. If you edit the identifier,
it will disappear (but it may reappear if you move onto another
identifier it knows about).

Generally speaking, it should match the contents of the blue boxes in
the documentation (eg a function contract or a macro's grammar spec).

Robby

On Mon, Sep 17, 2012 at 2:25 PM, Prabhakar Ragde <plragde at uwaterloo.ca> wrote:
> Sorry if this is a dumb question. This small quarter-circle, with an arrow
> in it, appears from time to time, and then disappears. It contains some
> links to documentation. I cannot tell what is causing it to appear and what
> causes it to disappear...? Thanks. --PR
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