On the other hand, some style guides support it, whether explicit or implicit. The 1994 edition of Merriam-Webster`s Dictionary of English Usage defends the use on the basis that dictionaries make no distinction.  The BuzzFeed Style Guide describes CBS and PBS as “acronyms that end on S.”  When a single word shortens several letters, dots are generally not used, although they can be used in informal use. For example, “TV” can represent a single word (for example. B “television” or “transvestite”) and is usually written without punctuation (except in the plural). Although “PS” means the word “postscript” (or Latin postscriptum), it is often written with dots (“P.S.”). His first look at the Paris German News told Wiesener that this new newspaper had nothing to do with the old P.G. “You can the P.G.N. Call, if they want to,” he thought, “but that`s the only difference. pee-gee-enn; What is the word for these words composed of initials? My memory begins to abandon me. Until recently, there was a technical expression that I didn`t remember. I have to get older. “P.G.
or P.G.N., there are six out of one and half a dozen of the other. Pee-gee-enn. It`s an acronym, that`s what it is. These are what they call words made of initials. So I remember, at least that`s something. The plural reductions of the agreement are: AGs. , Agrmts. or TFAs. The advertised form of an acronym, initialism, or syllable reduction (that is, what this shortcut represents) is called extension. The most common spelling pattern seen in acronyms is capital letters, with the exception of the few that have taken a linguistic identity as regular words, the acronym etymology of words being relegated to the background of general knowledge, as is the case for the words “scuba”, “laser” and “radar”: these are known as anacronymes.  Anacronymes (note well -acro-) should not be confused with anachronistics (note well-chron-) which are a kind of bad indication.
Words derived by appeasement from an acronym are usually expressed in mixed large/lowercase letters, so the basic acronym is clear.. . . .