Poetry is not only about rhymes. See (any) Obfuscated contest winners for programs that are beautiful, in both form and content, but unlike "classical" poetry, require some programming knowledge to appreciate.
There are also whole programming languages designed to be an artistic work, not to be used In Real Life - e.g. Perligata.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.