X10 Subfield $k - Form subheading:

Subfield $k contains a form subheading. A form subheading may occur in either the name or the title portion of an X10 field. Form subheadings used with corporate names include: Manuscript; Protocols, etc.; Selections.

Examples:

610 20$aBritish Library.$kManuscript.$nArundel 384.

610 10$aUruguay.$tTreaties, etc.$gArgentina,$d1974 Aug. 20.$kProtocols, etc.$d1982 Dec. 20.

710 22$aCatholic Church.$bPope (1958-1963 : John XXIII).$tMater et magistra. $lFrench. $kSelections.$f1963.

610 20$aDaughters of the American Revolution.$bMary Clap Wooster Chapter (New Haven, Conn.).$kCharters and regulations.