Does anyone know if it's possible to size a rich text box so that it pages
in even increments as does a multiline text box.

A multiline text box will not display a portion of a line. Therefore, if
five lines appear in the text box, paging displays lines 1-5, 6-10, etc.

A rich text box does display an incomplete (horizontal) line and the API to
return the first visible line seems to be as wrong (or it is reporting the
unseen top line) as often as it reports the actual first visible line.

I've tried various methods but cannot get the paging to work exactly as
required by the specs for this app.

If anyone has been successful doing this, I'd love to hear how.

TIA,
Mike