options:

a:	enable assertions
c:	allow C-like strings
d:	allow longs
i:	set the size of sets
n:	no register messages
s:	only compile standard pascal
t:	tracing
u, U:	allow underscores in variables
w:	disable warnings
A:	extra array bound checks
C:	disinguish between upper- an lower-case
L:	no FIL and LIN instructions
M:	maximum identifier length
R:	no runtime checks
V:	object sizes and alignments

Debugging options:

l:	run lexical analyzer only
I:	debugging info