SWI-Prolog has a number of memory areas which are not enlarged at run
time, unless you have a version with dynamic stack allocation. The
default sizes for these areas should suffice for small applications, but
most serious application require larger ones. They all can be modified
by command line options. The table below shows these areas. The first
column gives the option name to modify the size of the area. This
option character should be followed immediately by a number and
expresses the number of kilo bytes to use for the area. There are no
other limits than the available memory of the machine to the sizes of
the areas. The areas are described in table 
.
The heap is a memory area to store atoms, clauses, records, flags, etc. This area is dynamically enlarged at runtime on all versions of SWI-Prolog.
