Subject: Re: Background on DSSSL From: Sharon Adler <sca@xxxxxxxxxxxx> Date: Thu, 24 Jun 1999 14:16:21 -0400 |
Ralph, You have several errors in your background discussion of DSSSL both just on DSSSL itself and on the relation and timing of the work with HyTime. Thanks. Sharon At 11:42 AM 6/23/99 -0400, Ralph Ferris wrote: >Hi All, > >I'm encouraged by the response generated by my message "Scheme Programming >Reference." It is clear that there's an agreed need for better >documentation and some good ideas for what form that documentation should >take. I'll add some observations of my own in another message. In this >message, I'll reply to Paul Tyson's question (Wed, 23 Jun 1999): > >> is there any chance someone can collect information from members of the >> ISO working group that created DSSSL? This, together with minutes and >> records of the working group, would provide some fascinating background. > >Be advised that key members of the ISO DSSSL WG are now in that same role >in the W3C XSL WG. Since these folks chose to abandon their first child in >the woods, their cooperation in providing background for this list isn't >likely to be forthcoming. I can, however, provide a few details myself: > >- The first draft of DSSSL was written several years ago by Paula >Angerstein. That effort went on for maybe three years. I myself attended >presentations on this first version given by Sharon Adler and Anders >Berglund in the early (19)90s. These came with the caveat that "everything >was subject to change." They had that right. > >- The early version was eventually abandoned, Paula left and James Clark >joined the project. (Which came first and whether this was cause and effect >is unknown to me. Someone else may be able to fill in this point.) > >- The "new" DSSSL that emerged defined, among other things, its own query >language. This created a problem with the HyTime WG, as HyTime already had >a query language of its own: HyQ. A war ensued that went on for quite a >while, but ultimately the two sides came together. > >- The results of the cooperation between the DSSSL and HyTime work groups >was a common query language: Standard Document Query Language - SDQL. More >significant than the query language itself, though, was the recognition of >the need for a common "data model" that both DSSSL and HyTime could operate >on. The outcome was the SGML Property Set, which was added to the DSSSL >standard. > >- HyTime itself required an additional property set, built on top of the >SGML Property Set. This work took at very long time to complete. In the >process though, the very important concept of groves was developed. That >concept too was folded back into DSSSL. > >The next step would have been to go further with DSSSL/HyTime >"cooperation", addressing in particular the - still much discussed - >question of what is specified in a "style" sheet vs what information comes >from the DTD and the "architecture" on which the DTD may be based. > >We had reached this point in late 1996, when I showed "HyBrick" for the >first time at the ISO meeting that preceded SGML '96. Of course, SGML '96 >is where the organization of the XML effort was first announced publically ... > > >Best regards, > >Ralph E. Ferris >HyBrick Program Manager >Fujitsu Software Corporation >HyBrick: http://www.fsc.fujitsu.com/hybrick/ > > > > DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist > DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
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