Eliminate or at least reduce one of the idiosyncratic differences
between enchant weapon and enchant armor: make reading enchant weapon
discover that scroll if the effect is adequately discernible, instead
of always asking the player to supply a name for it. If your weapon
is identified and its +/- enchantment value goes up, or you're wielding
a worm tooth and it transforms into a crysknife, you learn the scroll.
However for the negative effect of a cursed one, that's only applicable
when the scroll is already known to be cursed.
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