When in the StoryGuide or the Gist Manager windows, the New Gist Command moves the cursor into the appropriate text field to create a new gist in the default gist collection.

 

In the StoryGuide, the New Gist command brings you here:

 

In the Gist Manager window, the New Gist command brings you here:

 

Enter the Gist text and keyword(s), if any, and press RETURN to create the gist.