Editing GFA BASIC (section)

===Manual===
Some editions of the GFA manual were printed with black ink on red paper, in an attempt to thwart photocopying and bootlegging. The effectiveness of this tactic was questionable,<ref>{{cite web|url=http://www.page6.org/archive/issue_30/page_46.htm|title=GFA Basic Compiler|quote=Another point is that it has been printed on a bright red paper, a technique used to stop photocopying. I tested this and found that with a bit of experimentation, the photocopy was easier to read than the original manual!}}</ref> and the manual returned to the usual black-on-white format after complaints from colour blind users and the proliferation of re-typed copies on the Internet.