DOCBOOK: including driver file ... db2html -d

["G.L. Grobe" <gary@grobe.net>]

One more bit of help, it was suggested to me that I use:
   'db2html -d myown.dsl myDocbookFile.sgm'
to use my own defines in the *.dsl file. But my db2html doesn't accept this.

Here's the output I get.
---
cassia(ACAIS):~/docs$ db2html -d ./acais.dsl acais.sgml
TMPDIR is DBTOHTML_OUTPUT_DIR19504
Usage: db2html [filename.sgml]

Any help much appreciated.