Here's several options.

http://www.pbpgroup.com/modules/wfse...p?articleid=10

http://www.microengineeringlabs.com/...bp/strtblx.bas

http://www.picbasic.co.uk/forum/show...bedded+strings

The first link to Darrel Taylors example is one of the best.

The 2nd link is to one from MeLabs.

The 3rd is an old thread on Embedded Strings in Code Space.
It's a bit more advanced than the first two, but shows a ton
of other options.