Many old-school latin american lead sheets use this fixed do
Solfège format.
If you're unfamiliar with it, it's nicely explained here:
http://en.wikipedia.org/wiki/Solfege (scroll down to the "Fixed do solfège" section).
[This message has been edited by Seamaster (edited 08-17-2008).]
[This message has been edited by Seamaster (edited 08-17-2008).]