.a ar(1) archive
.b bc(1), limbo source
.c C source
.d dc(1)
.e -- was efl
.f fortran
.g -- there was a gc?
.h C include
.i na(8) output
.j
.k ka, kc, kl
.l lc(1), lex
.m mc(1), limbo module source
.n na(8)
.o unix object files
.p pascal source?
.q qa, qc, ql power
.r rc(1), ratfor
.s assembler source
.t tc, with 5a/5l arm (thumb)
.u uc sparc64
.v va, vc, vl mips
.w wc(1)
.x -- old xa, xc, xl
.y -- yacc
.z za, zc, zl [VN atmel compiler]
.0 0[acl] spim
.1 1a, 1c, 1l 68010
.2 2[acl] 68020
.3 -- free (perhaps sh-3)
.4 64-bit mips?
.5 5a, 5c, 5l arm
.6 6a, 6c, 6l amd64
.7 7a, 7c, 7l arm64
.8 8a, 8c, 8l 386
.9 p9p, 9[acl] power64