... a similar vein, I would find it useful to be able to toggle between setting the start point of a transition curve, and setting the length of the transition. Martin thinks the basic idea has merit, so I wondered if it might be useful to open up the topic for further suggestions of paired (or triplicated, maybe?) functions that could use the empty triangle. posted: 25 Aug 2011 11:38 from: Martin Wynne I like Simon's suggestion to add more toggle options to the mouse action symbol: 2_250554_310000000.png At present clicking this symbol while using a mouse action does this: 1. For F6 curving adjustments on a transition curve template, toggle between adjusting the 1st or 2nd radius. (Equivalent to the- and= keyboard shortcuts.) 2. For mouse action adjustments to the ruler tool, toggle between adjusting opposite ends of the ruler. 3. Otherwise, repeat the previous mouse action (equivalent to pressing the BACKSPACE key, or clicking the hollow triangle top tool-button). By this means you can toggle ...