I've plotted a graph for which the y axis range is 0 to 1.  Firstly I'd like to know how to change this range, as well as the interval at which labels occur.

Secondly I would like to know where I should look (other than this site if there is somewhere more fitting as my first reference point) to find answers to such questions.  I don't know if they are answered in the OpenModelica User Guide.  I didn't notice any such answers when I scanned through it earlier.  If they're not covered in the User Guide and there is somewhere which would be more appropriate to go to find these sorts of answer, could you please let me know where?