[Orgmode] exporting to a specified directory

[Erik Iverson]

Hello,

Can you set some option in an org-mode buffer telling the
exporter to write the HTML and PDF versions of the document
in a specific directory?  I know the publishing mechanism
does this, just wondering if there is a simple variable
to set per file to set this on export, or do I need to
set up a publishing project?

Thanks!
Erik