DSSSL to HTML questions

1 How do I generate chunked output?
2 How do I change the appearance of <emphasis>?

1 How do I generate chunked output?

In general you switch between chunked and nochunked output by setting the variable nochunks to #t or #f. This can be achieved in your customization stylesheet or simply by adding

-V nochunks

on the (open)jade command line.

2 How do I change the appearance of <emphasis>?

The <emphasis> tag is rendered by the default HTML stylesheet as italic (<I>). If you want to change the appearance you have to do this in your customization layer. Jirka Kosek proposed the following solution recently on DocBook-Apps ML:

(element emphasis
(if (equal? (normalize "bold") (attribute-string (normalize "role")))
    ($bold-seq$)                                                     
    ($italic-seq$)))

This solution looks at the role attribute and uses the <B> HTML tag to render <emphasis> if this attribute is set to bold.