Tips and tricks
Using tlimit on OSX 10.4+
To use the "tlimit" command to zoom into a time interval in an active SPEDAS plot on OSX, users should enable "Click-through Inactive Windows" in XQuartz (Preferences -> Windows).
See the following:
http://www.exelisvis.com/Support/HelpArticlesDetail/TabId/219/ArtMID/900/ArticleID/3947/3947.aspx