where

Limit the set of features for which labels will be generated and placed. This is a SQL expression that can refer to the attributes of the feature e.g.:

• "" (no limitations)

• "NAME LIKE 'A%'" (Only label features with NAME attribute values starting with 'A')

• "(LENGTH CAPACITY) and (TYPE = 1)" (Only label features whose attributes satisfy the SQL condition)

The default value is "".