File psl-1983/3-1/tests/20/test-guide.err artifact 689c76ff59 part of check-in d9e362f11e

@Comment{ErrLog of TEST-GUIDE.MSS.17 by Scribe 3C(1254) on 24 July 1982 at 13:19}

Error in MAINN command found while processing the manuscript.
TEST-GUIDE.MSS.17 line 287:  @@EX @MAINn.CMD
The name @MAINN is not defined in document type article.