ffkdescr.asl define un formulario que permite gestionar tablas que únicamente disponen de :
<struct id="st_Tipo_SubTipo" type="relation">
<param name="form_split" value="rows=30%,*"/>
<param name="formid" value="fdescr.form.descr"/>
<param name="form_source" value="Tipo"/>
<param name="form_type" value="form"/>
<param name="navigator_position" value="W"/>
<param name="form_caption" value="Tipo"/>
<param ord="2" name="formid" value="ffkdescr.form.descr"/>
<param ord="2" name="form_source" value="SubTipo"/>
<param ord="2" name="form_type" value="table"/>
<param ord="2" name="form_caption" value="SubTipo"/>
<param ord="2" name="source_filter_field" value="fk"/>
<param ord="2" name="button_data" value="1"/>
</struct>