[caslon]

That was necessary to demonstrate that there was no need to falsely recall it. You could just read it. It's three lines, takes about thirty seconds to read carefully, and would have saved you the trouble of posting misinformation.

[linkdd]

It was not necessary. I would have (and I did) edit my comment to rectify my error.

I did not claim I was "sure", which is the point of "IIRC". Calling this misinformation is a bit exaggerated.

You can choose to be kind.

[lillecarl]

You can also choose to read up on essential facts before posting. When people send me emails that require me to go out of my way to interpret and understand because they withheld easily accessible information (usually because of their laziness to type) I answer with a "?" and remove the email.

IIRC isn't necessary when the content is clearly and easily accessible for you to read, I would prefer to not have to read comments based on vague memory when the facts are right there. This is netiquette.