I could not submit hyperlinks, now it is 5th post...
So, I am ending with beginning I cut to post...
I have read somewhere (probably in this site) that plurals of abbreviations, like
CMS (Content Management System) are better to denote by ending "s" but not " 's " (with perpending apostrophe), i.e. to write CMSs, but not CMS's or CMS-es because apostrophe indicates possession (by devil?).
What about "pro's and con's"?
I see it ubiquitously.Even more, top search (google) by "pro and
"pro's and con's" search gives 106 000 000 results
"pros and cons" search gives 21,700,000