<LockedField> (Embedded Object Cannot Be Refreshed)

This element specifies that the embedded object's appearance is locked - that is, that the object's current representation shall be locked to prevent any user interaction or automatic application behavior from modifying its contents.

This element shall contain no content - its presence indicates that the embedded object is locked, and its omission allows the field to be updated.

The possible values for this element are defined by the ST_TrueFalseBlank simple type (§6.2.3.24).