<pre> in exported HTML?

[Mitchell L Model]

How can I get a <pre>...</pre> included when exporting to HTML, 
DHTML, or Word (HTML)?  I need to include chunks of computer code in 
my document.  I can format these in OO3 using <option>-<tab> and 
<option>-<return>, but the white space disappears on export.

If, as I fear, there is no way to do this, the only thing I can think 
of doing is ending every line with some strange character that I 
otherwise wouldn't use, preceding every tab with a different strange 
character, and put a third and fourth strange character at the 
beginning of end of every <pre>.  Then after the HTML is generated do 
a global search-and-replace in a text editor or Unix command-line 
tool to replace each of the characters with <pre>, </pre>, newline, 
or tab, as appropriate.  Pretty awful, but I can automate the 
process, I guess.