Changing the Help Font Size
You can change the size of the font for all the standard text in the Help Viewer. The change will affect normal paragraph text, but not text marked as headers, or other special text types.
To change the font size, click the Font button ( ) on the Help Toolbar.
Every time you click the Font button, the font size is increased, unless it has reached the maximum size. In this case it is set back to the minimum font size.
Changing the font size will not affect the Navigation Pane or the Help Toolbar.
See Internet Explorer Options for more information about Internet Explorer settings that may affect HTML Help.
The Font button is an additional option on the HTML Help toolbar, and may not be available on all help systems.