Thanks for pointing these things out. Sometimes it's hard to perform a self-review, and it is good to get feedback from a neutral third party.
On a more general note, I think these are great examples of how to answer a question that apply not just to PerlMonks but also to teaching in general. It's a great summary of some of the points made in threads such as On Answering Questions, How to answer questions, and brian's Guide to Answering Questions, and I will link to this and refer others to it in the future.
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