The situation can arise that one needs a lot of space in some long-range division during the initialization phase, which is then abandoned. Since divisions can only grow, but never shrink, this space could be blocked for the whole run.
To reduce this space of a particular division
to the initial allocation for for this division
(or to its present occupation, whichever is larger),
one should first
CALL \Rind{MZGARB
(IXDIV)}, to collect dead banks,
followed by
with IXDIV index of the division
This will shift all divisions below division IXDIV
upwards
by the amount of space liberated.