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=head1 SIGINT

rash installs a SIGINT handler which may used to cancel lengthy raster
operations.

=cut

sub cntrlc {
    my($sig) = @_;
    &Raster::gdsigint(1);
}

=pod

=head1 HELP

Commands C<?> and C<help> run C<perldoc rash> thus showing this
manual page.

Command C<? Raster> and C<help Raster> run C<man Raster> thus showing the