* The Config::Perl::V module for Perl (https://cpan.org).
- * Optionally, the Text::Diff and Memory::Usage modules for Perl
- (https://cpan.org). These modules enable PSPP to test its Perl
+ * Optionally, the Text::Diff module for Perl
+ (https://cpan.org). This module enables PSPP to test its Perl
module more thoroughly.
Other optional packages: