Right-clicking on a text entry field brings up a file selection dialog that you can use to choose an image file. This generates tags of the form
Right-clicking can also be used to insert sound files. This generates tags of the form
<audio src="a.wav">. To play the sound again, press CTRL+R in the main window.
Adding LaTeX formulas
LaTeX can render your formulas using tags like
For this, you need LaTeX and dvipng installed. Windows users can download MiKTeX to achieve the same functionality.
Achieving more control over LaTeX
</$> tags use LaTeX's inline math environment, but there are two more tags:
</$$>tags for centered equations on a separate line (LaTeX's
</latex>tags for code which is not in any environment, but just embedded between a typical latex pre- and postamble.
For even more contol, see the section Advanced preferences to set the preamble, postable and the dvipng command.
Note: if you have problems with latex under OSX, add a PATH node with value "$PATH:/opt/local/bin" according to the procedure described here.