(Nokia n900)

Is there a way to make microB open links in a new window
by default (instead of by long-pressing and selecting)?

With a new window, you can simply close it and immediately
bring up the previous window, whereas pressing the back button
seems to re-render or even re-download the old page, often slowly (doesn't microB use a cache?).

There are several threads related to this, but I didn't see a definite answer to my specific question.

Also, I notice some web-pages automatically open in a new window - what accounts for that, something in the HTML?