Defined in header file: hzDocument.h

This is a quantifier (given by a single character in the DTD) that immediately follows the specified item to which it applies, to restrict the number of successive occurrences of these items at the specified position in the content of the element; it and may be either:

Enum definition:

enum    hzXOccur
{

XML_INCID_PLUS(+) Specifying that there must be one or more occurrences of the item.
XML_INCID_STAR(*) Specifying that any number (zero or more) of occurrences is allowed, the item is thus optional.
XML_INCID_MAKR(?) Specifying that there must not be more than one occurrence, the item is optional.
XML_INCID_DFLT( ) If there is no quantifier, the specified item must occur exactly once at the specified position in the content of the element.

} ;