>JavaHelp can bring you that. I think the IDE demo. of the API covers that.
I am developing a Java open source maths IDE (www.sympl.org), along the lines of Mathematica or MatLab.
I would like to have easily accessible help in every docking pane, dialog... maybe field.>
>I doubt it has many competing APIs.
Is JavaHelp the way to go, or are there better solutions?>
>The JavaHelp binaries are distributed under the BCLA. I am not sure what license the source is.
Must be GPL'd>