Notations from the Bat file REM To change the amount of memory allocated to d20Pro, modify the -Xmx argument. REM The default is -Xmx512m and allocates 512 megabytes of heap. REM If you are running out of memory, try to up to -Xmx1014 to get 1 gigabyte. REM On 32bit operating systems the maximum will vary. If d20Pro fails to start then REM you should lower the value until d20Pro starts.