Proper OS10 progs aren't meant to have a memory allocation, the system sorts the memory according to what is required (the fixed allocation was an OS 9/Classic thing now 8 years past). The thing about PSE is that once it has grabbed the memory it needs, it holds on to it even though you have closed all the files you were working on, expect CS is the same. Its nice if you go back to a file you finished with and find you can still do 'undos' but otherwise a bore.