creates a nodelist index which is used by ifcico for faster nodelist
Depending on the OPTIONS set when compiling the program, one of 3
different nodelist indices will be generated: a
type nodelist-index has some advantages (smaller indices and faster
index generation) over the other 2 types but is currently only in
state - you should also read the README before using this type of
Display a short help message.
Set the debug verbosity.
may be a number from 0 to 32 to set 'on' bits from 1 to number, or
a string of letters where 'a' = bit 1, 'b' = bit 2, etc. up to bit 26.