They're actually incorrectly using the acronym tag there. An acronym (in the HTML sense at least) is only so if it can be said as a word (like SCUBA or RADAR). Stuff like CSS (and IR35) are actually abbreviations. All acronyms are abbreviations but not all abbreviations are acronyms, so use the abbr tag to cover them all. Plus the acronym tag is getting phased out in future too, in favour of the abbr tag.AaronPollock said:I'm very impressed to see the Harbinson Mulholland one expanding their abbreviations (e.g. IR35) using acronym tags to define terms. Not often you see that attention to detail.
technically speaking, CSS is an abbreviation or an initialism but not an acronym. An acronym is an abbreviation that is said as a word, like NATO (nay-tow) or FAQ (fack). An acronym is an abbreviation but an abbreviation may not be an acronym.