Castle of the Winds Experimental:

These are probably the 'Enchanted Against' values. I choose to try and activate all of then using 1 of the 2 variables with these instructions.

# of Strong Against:
If this isn't 0, change to a weapon without any 'Enchanted against' attributes.

If it is 0, set it to 1, and set the following variables as follows:

'Strong Vs.1,16/1/255' = 255
'Str. Vs.1,16/8/2/255' = 255
'Str. Vs. 1 On(0/3)  ' = 3
'Str. Vs. 1 On(0/3)  ' = 3

Now don't equip a weapon with 2 or more 'Enchanted against' values.

Extra info:
The numbers before 255 on the first 2 variables are the singular versions of each 'Enchanted Against' effect. The fact that each one represents one bit suggests that it tests for that bit in the set when you attack a monster. Including all bits by using 255 isn't that far-fetched, even though trying to equip a weapon with all 5 'Enchanted against' values will crash the game.