All headings used, regardless of tag , must be searched in the online authority file for the AACR2 or AACR2 -compatible form of heading.
Procedures described here are applicable to all the above functions of name headings.
Specific procedures unique to individual fields are given with the instructions for that field, or in the general instructions for the particular category of headings. There are three categories of NAME headings. These categories remain the same regardless of the function. The second and third characters of the numeric tag define the category. Input only one space after an open date in a heading.