In addition to the basics, it seems worth explaining 'why use perl?', which can only be answered by mentioning features which are unique to perl, such as:
- the many replacement functions for shell or DOS commands and C functions that avoid spawning to such scripts and programs.
- the huge wealth of modules in CPAN
- the relative flexibility of storage ("typeless" scalars, arrays and hashes)
- adaptability of programming style and system level (OO, event-driven, data-driven, database interfaces, operating system call interfaces)
Others might be able to suggest additions to this list.
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