Select the static fields are used to define fields that take specific values.
Setting these values is done by XML tag <select> :
<selection name="view.type.selection">
<option value="grid">Grid</option>
<option value="form">Form</option>
<option value="tree">Tree</option>
<option value="search">Search</option>
<option value="portal">Portal</option>
<option value="calendar">Calendar</option>
<option value="search-filters">Filters</option>
</selection>
A field may use this selection as these:
<string name="type" selection="view.type.selection"/>
Thus, the fields in this way represent: