<rng:optional><rng:attribute name="width"/></rng:optional>
<rng:optional><rng:attribute name="wrap"/></rng:optional>
<rng:optional><rng:attribute name="name"/></rng:optional>
+ <rng:optional>
+ <!-- @for: allows to explicitely link a label to a field -->
+ <rng:attribute name="for"/>
+ </rng:optional>
<rng:zeroOrMore>
<rng:choice>
<rng:text/>