GCG Documentation pages
GCG 11 User Guide	GCG User Guide (pdf).
GCG 11 Program Manual 1	GCG 11 Program Manual part 1 (pdf), the reference manual the GCG programs («Assemble» – «Publish»).
GCG 11 Program Manual 2	GCG 11 Program Manual part 2 (pdf), the reference manual the GCG programs («Reformat» – «XNU» and Appendices).
Farm Files	To search databases more efficiently, GCG database subsections are collected in so called farm files.