Hi Rebecca, This is an unusual situation, you should not add these icons for yourself, i think there may be something wrong with your Eclipse situation, please check your Eclipse version etc.
As Dark told, this tool is built by GMF, you can find the all the source code in its svn, you can also dig into the code by yourself if you like 2011/10/13 Rebecca Witmer <rwit...@ponvia.com> > Hi All, > > I am creating modeling_diagram files. In the palette called Scxml State > Element I have the following available: State, Parallel, InitialState, > HistoryState, Transition, OnEntry. There isn't an icon for FinalState or > OnExit, etc. I took a few guesses at how to add those elements to the > palette, but I haven't been correct so far. I know there must be a way, > because the picture here has FinalState shown. > > > http://commons.apache.org/sandbox/gsoc/2010/scxml-eclipse/images/guide-2.png > > How do I get that to show up in my palette? > > Thanks, > Rebecca > -- Best Regards Gui Xun Long (桂训龙)