Plus42 Equations, Preview Release

[Thomas Okken]

New update:

1. Added XVIEW function. This works just like AVIEW, except it takes the text from the X register rather than the ALPHA register, so it doesn't have the 44-character length restriction of AVIEW.
Note that XVIEW requires the X register to contain a string. This is not intended a replacement for VIEW ST X; it's meant to make it possible to display longer messages than what AVIEW can handle.