I always wondered who wrote this, anyone know? I have my suspicions but ...
".SH BUGS
.I Ptrace
is unique and arcane; it should be replaced with a special file which
can be opened and read and written. The control functions could then
be implemented with
.IR ioctl (2)
calls on this file. This would be simpler to understand and have much
higher performance."
it's interesting in the light of the later plan 9 proc interface.
ron