Formating text

[Francesc Blanes]

Hello,

I'm using a rich text box control.

I have to create a custom button (in jscript) to apply a predefined format
to the piece of text tat is select in the text box. (i.e. red background
color). I have to create another button to reset the format for the selected
text.

I didn´t find how I can do it. Anyone could help me please?

Thank you