base.dir — The base directory of chunks
If specified, the base.dir parameter identifies
the output directory for chunks. (If not specified, the output directory
is system dependent.)
Starting with version 1.77 of the stylesheets, the param's value will have a trailing slash added if it does not already have one.
Do not use base.dir
to add a filename prefix string to chunked files.
Instead, use the chunked.filename.prefix
parameter.