Preserve white space in tables
In tables in particular, more so than in a general content context, whitespace can be important. I think it would be wise to try to faithfully preserve it as best as possible.
See zMarks_Table1 for an example: the author has achieved indentation to indicate a hierarchy within cells using plain old spaces.
Curious what you think the best approach would be @wendell? <pre>s? Convert runs of multiple spaces in a row in tables into CSS? Indentation specified in CSS currently comes through fine.