Errors And Errata

``Pobody is nerfect'', so there maybe and there are errors in a module. If this would be a software, it would be easy to apply a patch and recompile it, but a change in a Postscript file means that it look different from the previous version. There are three possibilities to always have the newest version of a module:

1.

Print-out the newest version: very expensive.

2.

Use a Postscript-viewer to read the rules: inconvenient, but cheaper.

3.

Read the errata section of the CHANGES file and apply the changes with a pencil: may destroy the whole document, but cheaper.