It should be used in search fields with two choices.
There is also a choice of neutral (both choices).
The data type you are going to use in the selection box editor should be bit or boolean.
String can also work on data types, but column type must be created with types of data that can hold two values in the database, such as bit or boolean.
Query editor controls can be used for querying Netigma tables.
When defining query controls to a field of a table, try to use appropriate controls for that field, something related to that field.
The selection box has 3 different selection modes. True values in the selected state, false values in the empty state, and both values in highlighted state.