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pro_opt - Optimize an Apple II ProDOS disk image file

=head1 VERSION

This document describes version 0.201 of
pro_opt, released September 12, 2015
as part of AppleII-LibA2 version 0.201.

=head1 SYNOPSIS

  pro_opt IMAGE-FILE OUTPUT-FILE

=head1 DESCRIPTION

B<pro_opt> eliminates wasted space from a disk image file containing
an Apple II ProDOS volume.  It does this by creating a new disk image
file and copying all files from the old image to the new one.  Any
un-allocated blocks are eliminated from the new image file.

Note that some emulators cannot deal with image files that are smaller
than their nominal size.  That is, they expect a 280 block disk image