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Variable	Description
`$CASE`	Make answer case-sensitive. Also for Java mode.
`$SPACE`	Make answer space-sensitive. Also for Java mode.
`$REDUCE`	Ignores multiple, preceding, and trailing whitespace in responses. Also for Java mode.
`$size`	Sets the width of the answer box, for example, `$size=20`.

Perl Variables for Fill-in-the-Blank Questions