\label{Authoring_Math_Editor}
You can use the \char`\"{}Edit Math\char`\"{} button to open a pop-up
window containing the Drag Math editor. Use the editor to compose
a math expression you wish to include in the text of a LON-CAPA resource,
click the {}``Render Latex'' button and the expression will be 
inserted at your current edit point in the main window - either in
the large editor area, if in EditXML mode, or in the current text block
you are modifying, if in template-based Edit mode. 

The {}``Edit Math'' button is not currently available when WYSIWYG
mode has been enabled in your User Preferences.