These environment variables are referred to by the microcode: the
executable C program called
mit-scheme-ARCH-VERSION. The values they
specify are overridden by the corresponding command-line options, if
The initial band to be loaded. The default value is all.com.
A list of directories. These directories are searched, left to right, to find bands and various other files. On unix systems the list is colon-separated, with the default /usr/local/lib/mit-scheme-ARCH-VERSION.
The size of constant space, in 1024-word blocks; overridden by --constant. The default value is computed to be the correct size for the band being loaded.
The size of the heap, in 1024-word blocks; overridden by --heap. The default value depends on the architecture: for 32-bit machines the default is ‘3072’, and for 64-bit machines the default is ‘16384’.
The size of the stack, in 1024-word blocks; overridden by --stack. The default value is ‘1024’.