[markvangulik]

Some of the keywords and operators (punctuation) of Avail methods are “completely optional”, in that the caller’s choice to include it or not (or alternative prepositions in some cases) is solely to improve readability of the result. For example, the ordinary field-getter has the form “_’s??thing”. The double-question-mark should actually be a single Unicode character (I’m on my phone). The question-mark makes the “s” optional, so you can say “cat’s thing” or “Jess’ thing”. But there’s nothing stopping you from saying “cat’ thing”, other than the derisive laughter of your peers. :-)