Plus42 (and Free42) minor cosmetic issues

[Thomas Okken]

By default, the vertical pixel size is set equal to the horizontal pixel size when the number of rows is greater than 2. The idea is to make the display look like the HP-42S when there are two rows, and emulate the square pixels of the RPL calculators when there are more rows.

This behavior can be overridden using a DisplaySize: line in the skin's layout. For an existing skin image whose default display area is designed to fit 2 rows, add this:

    DisplaySize: 22,2 -1 ys -1

For ys, use the same number as for the "y magnification" in the Display: line.

https://thomasokken.com/plus42/skins/README.html