I thought I did explain it? but obviously not well enough. Mea culpa. I suppose I may have misremembered life under OS 9.1 and, unfortunately, my older iMac has decided not to co-operate tonight so I cannot actually run through the process to verify my recollection but, for what it's worth, I'll try again. Find the icon for MRJ and click on it once to select it for action. In the menu bar at the top of the screen, you will see File and one of the elements in the pull-down is Show Info. Click on that option. Within that dialog, you should see a Memory option where you can change the amount allocated to the selected application. I hope that's right. If not, post back and, hopefully, someone with a workable older machine can more accurately guide you through the process.

Good luck