Just as an aside, linking all sentences makes them a little uncomfortable to read. Please in the future just link a single sentence or only some words.
It's because the text is light green on a white background. Perhaps if they changed the link color?
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.