RC-4000 Computer Reference Manual: Document enhancement

Original version: Sat Mar 9 15:07:15 2019.                Valid HTML 3.2!

This directory contains an enhancement of a bitmap one-up and two-up page scan of a historic computer manual copies here from the original at http://bitsavers.org/pdf/regnecentralen/RC_4000_Reference_Manual_Jun69.pdf.

The processing illustrated in this directory involved these steps: