ref: a854b5cd46e3894e2c970927d54ef53de82328fc dir: /src/execfs/builds/rules/
/index.html /cfg/$sysname/src/execfs/builds/index.rc /man2html/([0-9])/([a-zA-Z0-9\.]+) troff -manhtml /usr/build/code/plan9front/sys/man/'\1/\2' | troff2html -t '\2(\1)'