* Use quotes to enclose text whose exact appearance is important; in this case preserve both internal and external punctuation, notwithstanding the above. For example, “Click on the button labelled ‘Click me!’.” If the quoted text is to be typed by the reader, enclose it within “<code>” inside the quotes. Where possible, avoid having URLs appear in text by placing them in external links; when an URL must appear in text, enclose it in “<code>” with no quotes.
* Use <code> &rsquo; </code> and not <code>'</code> for an apostrophe. In typesetting, the apostrophe is identical to the right single quote, and there is no distinct HTML entity for the apostrophe.
* Use <code> &ndash; </code> (–) and not - for numerical and date ranges or elsewhere where endashes are called for.
* Use <code> &mdash; </code> (—) and not -- where emdashes are called for.