Shortcut for changing font size

Ctrl + MouseWheel on active editor.

You'll probably find these shortcuts useful:

Ctrl+Shift+. to zoom in.

Ctrl+Shift+, to zoom out.

Those characters are period and comma, respectively.

In the Macros explorer under samples/accessibility there is an IncreaseTextEditorFontSize and a DecreaseTextEditorFontSize. Bind those to some keyboard shortcuts.