Mon Apr 16 23:33:04 PST 1979 The C compiler modifications here given as diffs will change a phototypesetter C compiler to have a larger symbol table (change to c0.h) and to generate switch code in I space (c11.c). We install the changed C compiler as -t0 and -t1; see the source for cc.c. You need make a modified C compiler only if you intend to recompile ex (-t0) or if you wish to compile with smaller data spaces per user; all code will work fine without -t1, and all programs but ex will compile with normal symbol table size.