### Query Layer

The Query Layer interface is used to define a query expression and the color used to highlight the selected objects obtained when the query is applied. A query expression is defined by a restriction clause (WHERE clause).
It is accessible through:
Layer Explorer > Right Click over an layer name > Query...
or
Layer > Query...
This interface consists of the following steps:

1. Input Layer - Select the input layer.
2. Criteria - Defines the restriction clause.
3. Layer Selection options:

- Add: Transforms the query result in the layer selected items, adding the query results to the layer selection.
- New: Transforms the query result in the layer selected items and remove previous layer selection.
- None: The result will be just painted over the map.
- Highlight: Sets the color to be used to highlight the selected objects.