steb: readonly [
    { range: [min: -2, max: 294]; structure: "andexdb:-2-294_steb" },
    { range: [min: -32767, max: -32767]; structure: "andexdb:-32k_steb" },
    { range: [min: 32767, max: 32767]; structure: "andexdb:32k_steb" },
] = ...

Mappings for the "smithing table enchanted book" structures.

These structures are used in the \enchantmentbarrels command to get barrels with a bunch of Smithing Table Enchanted Book items with different enchantment levels.