 In the 1980s the firm participated in the ISO committee to standardize SGML, the forerunner of XML and HTML, and applied this standard in the release of DL Pager, a high-volume SGML-based batch composition system, along with WriterStation, an SGML text editor.In 1987 the firm participated in the committee to develop the SGML portion of the CALS initiative.In 1991 DL Composer, a Formatting Output Specification Instance (FOSI)-based batch composition system was released.