Burn multiple sessions in X.1?


Apple has added the ability in v. 10.1 to burn data cd’s. Unfortunately I don’t have a Large hd on my Powerbook and I like to burn my data to cd’s before I have enough to fill a cd. Having the remaining space on the cd I would like to burn other sessions as needed using the same method built in to v. 10.1 without using toast. Does anyone know if this is possible?