Get into the habit of saving using the SAVE command when you have gotten your gear back from your corpse after dying. This is in case the MUD crashes and reverts you to a saved version of your pfile when you had no gear. - Riviat
Prestige Classes are schools of learning open only to a select few. Each class has a set of requirements required for transition, which is done at mortal level 50. You retain all of the skills from your low-mort levels, although in some cases, skills contrary to the new class's teachings may be removed. After level 50, you level as your new class in all ways, including gains, new skills and spells, and so on. You retain the same Prime Requisite as your original class, and the same stats and attributes you had before.