bool CMarkup::RemoveAttrib( MCD_CSTR szAttrib );

CMarkup Developer License

RemoveAttrib is only in CMarkup Developer and the free XML editor  FOAL C++ scripting.

Call RemoveAttrib to remove the attribute named szAttrib in the main position element (or processing instruction). The method returns false if there is no main position element or attribute by this name.

See also SetAttrib and RemoveChildAttrib.