a kind of a style sheet, but it's not the same as the style sheets that we use for online presentation
an SGML tagged document that conforms to the Output Specification DTD
Formatting Output Specification Instance. An instance of the Output Specification (OS) that assigns values to the style characteristics for a particular document type declaration. The FOSI uses the syntax of an SGML/XML document instance and is designed to format documents for paper delivery.
Formatting Output Specification Instance, an SGML document that specifies the appearance or presentation of another SGML document in accordance with the Output Specification DTD defined by MIL-STD-28001C.
Formatting Output Specification Instance. A standard used for formatting SGML documents for display on screen or paper. The Arbortext Adept SGML editor program uses FOSIs.
Format Output Specification.
(Formatting Output Specification Instance) A FOSI is used for formatting SGML documents for printing and other outputs. It is a separate file that contains formatting information for each element in a document.
In computing, FOSI is a style sheet language for SGML and, later, XML. It stands for Formatted Output Specification Instance. FOSI was developed by the US Department of Defense to control the pagination and layout of SGML and XML technical data.