1) no consistency one is a pure text field and others are date fields,
except for the fields not beeing bound to the xml schema there is
nothing different about them.There is one odd thing, one field that is
bound to the xml schema and also checked during save has never had any
null value aka never came back with an error msg.2) No restrictions that
i can think of, the export to xml from the schema works great.3) nope
it's only typed in values or choose date fields.