# Default attribute items (Access Query Language)

Default attribute items have numeric item-IDs starting with 1.

These item-IDs are used by AQL sentences as output specifications if no other output
 specifications are given.

 The numeric item-IDs must be consecutive. That is, to have the third attribute list
 by default, attribute items 1 and 2 must exist, even if they are not needed for the
 listing.

 The attribute items for attributes that are not needed for listings can be given a
 dictionary code of x.

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Source: https://d3codex.com/access/default-attribute-items-access-query-language/ - part of the D3Codex reference.