(load "because you don't have to shift to type the parentheses or quote marks. (However, it is still possible to specify a filename as a Scheme string literal, with quote marks--you'll need this for filenames containing whitespace.) Also, it works in any package, unlike
(load ", which will work only work in packages in which the variable
loadis defined appropriately.
,exit [Exits back out to shell (or executive or whatever invoked Scheme 48 in the first place).
Expshould evaluate to an integer. The integer is returned to the calling program. The default value of
expis zero, which, on Unix, is generally interpreted as success.
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