@calendar indicates the system or calendar to which the date represented by the content of this element belongs, but this element has no textual content. The element should not be categorized in detail with @subtype unless also categorized in general with @type @targetLang should only be used on if @target is specified. Abstract model violation: Paragraphs may not contain other paragraphs or ab elements. Abstract model violation: Lines may not contain higher-level structural elements such as div, p, or ab. Only one of the attributes @target and @cRef may be supplied on . Only one of the attributes @target' and @cRef' may be supplied on The content of a "gloss" list should include a sequence of one or more pairs of a label element followed by an item element Abstract model violation: Lines may not contain lines or lg elements. An lg element must contain at least one child l, lg or gap element. Abstract model violation: Lines may not contain line groups. Abstract model violation: ab may not contain paragraphs or other ab elements. Abstract model violation: Lines may not contain higher-level divisions such as p or ab.