{{Umbrella|Titles}}
|''Title field''||In the title field, the corresponding main title is recorded. The system is programmed to filter meaningless articles or words at the beginning of the title depending on the indicated language. If the programme does not make the correct choice, then the underscore ('_') can be placed manually just before the word on which the title needs to be sorted. Only one underscore per title is considered.
|''Extension''||(empty)
|''Type''||'Hoofdtitel: ondertitel' [Main title: subtitle]
|''Language''||The language in which the title is composed. For multilingual titles, the language of the first part of the title is chosen. This language is needed to allow the system to filter meaningless articles or words at the beginning of a title.
|''Source''||Title page, Document or External
|}
|''Title field''||In the title field, the corresponding grouping title is recorded.
|''Extension''||(empty)
|''Type''||'Verzameltitel' [Grouping title]
|''Language''||The language in which the title is composed. For multilingual titles, the language of the first part of the title is chosen. This language is needed to allow the system to filter meaningless articles or words at the beginning of a title.
|''Source''||External
|}
|''Title field''||In the title field, the corresponding uniform title is recorded. These titles may be looked up in the authority files (search key: titles). It is always the main form that needs to be selected for these titles.
|''Extension''||(empty)
|''Type''||'Uniforme titel' [Uniform title]
|''Language''||Language of the uniform title. For bible books and liturgical works this is always Latin.
|''Source''||External
|}
{{SeeList|Lists of Uniform Titles}}
|''Title field''||No problems arise in recording the filing title since all that is needed is a code. These code depends on the type of publication:
<ALM>: almanacs<br>
<AUC>: auction catalogues<br>
<ORD>: government publications<br>
<PER>: periodicals<br>
<THE>: theses
|''Extension''||The exact date of issue is recorded in the extension field, in the following way: 4 digits for the year, comma, 2 digits for the month, comma, 2 digits for the day. No spaces are added after the comma's. If the day is unknown, the last comma and last 2 digits are dropped. If the month, too, is unknown, these digits and comma are dropped as well. If the day is known but not the month, then the month is recorded with a double zero. If the year is unknown but we do know a month or day, the same system is adopted.
<blockquote>'''''Examples'''''<br>
|9 nov. 1672||1672,11,09
|feb. 1671||1671,02
|12 xx 1671||1671,00,12
|9 nov. xxxx||0000,11,09
|xx nov. xxxx||0000,11
|12 xx 16xx||0000,00,12
|}</blockquote><br>
For almanacs, it is impossible to give an exact date. Therefore the extension field for almanacs contains only the year, and may be followed by the city for which the almanac was meant. E.g. '1785 Brugge' or simply '1613'<br>
For auctions that continued on multiple days, the first day of the auction is selected for the filing title.
|''Type''||'Sorteertitel' [Filing title]
|''Language''||'Mul'
|''Source''||External
|}
|''Title field''||In the title field, the corresponding parallel title is recorded. A new block of title fields is created for each parallel title.
|''Extension''||(empty)
|''Type''||'Paralleltitel' [Parallel title]
|''Language''||The language in which the title is composed. For multilingual titles, the language of the first part of the title is chosen. This language is needed to allow the system to filter meaningless articles or words at the beginning of a title.
|''Source''||Title page. Parallel titles found elsewhere in the document or from external sources are not recorded in the bibliographical description, since a parallel title, as the name already suggest, contains little additional information.
|}