Examples from "Common Particles Configuration" section of the form reference: form.hidden - structure (containing label) is not printed around the particle section, there are three fields in the form Required [element], Single Occurrence, with Simple Type [inline-Form-FieldStd] localName is [FieldStd] without namespace Required [element], Single Occurrence, with Simple Type [inline-Form-FieldHidden] localName is [FieldHidden] without namespace Required [element], Single Occurrence, with Simple Type [inline-Form-FieldRealHidden] localName is [FieldRealHidden] without namespace Examples from "Common Particles Configuration" section of the form reference: form.hidden - structure (containing label) is not printed around the particle section, there are three fields in the form