...
id= System internal name of the item
avail= Availability (number plus optional letter, e.g. 4, 4L, 7I, L = licensed, I = Illegal)
conceal= Concealability (number)
cost= Cost in Nuyen (number, required)
devrat= Device rating (number)
wifimods= (currently not used)
rate= Boolean, if yes allows selection of a rating for the item
ratemul= Identifies which values are to be multiplied by rating (ATTACK, CAPACITY, DEVICE, PRICE, PRICE2 (price squared), AVAIL, AVAIL3 (avail/3), ESSENCE, MODIFIER, DEFENSE_RATING, REQUIREMENT, MINORACT, DAMAGE_REDUCTION, separate by spaces)
pricetable= price is selected from table based on rating e.g. <pricetable>10,10,10,50,50,50,100,100,100,250,250,250,500,500,500,1000,1000,5000,5000</pricetable>
maxrat = Maximum rating (number)
minrat = Minimum rating (number)
modonly = Boolean, if set to yes, item is not shown in menus (can only be added as part of other items)
choice= Opens a selection dialog (ATTRIBUTE, AMMUNITION_TYPE, MATRIX_ACTION, SKILL, COMBAT_SKILL, NONCOMBAT_SKILL, PHYSICAL_SKILL, PHYSICAL_ATTRIBUTE, MATRIX_ATTRIBUTE, SENSE, MENTOR_SPIRIT, PROGRAM, ELEMENTAL, SPIRIT, SPRITE, NAME, SUBSTANCE_SEVERITY, SPELL_CATEGORY, MELEE_WEAPON, WEAPON, ADEPT_POWER, MELEE_TYPE, )
choiceSub= (currently not used)
count = Boolean, if set to yes enables stacking of items and +/- change of count
multi = Boolean, if set to yes enables adding item multiple times to slot
modslot = Number of ItemEnhancements that can be added, if different from standard assumption based on subtype (number)
sensrat = Sensorrating (number)
In addition all flags of <useas>
...