You are welcome!
Yes, I do know what rtfm stands for, and I really didn't intend for it to be rude. I'm truly sorry if you took it that way. There are other acronyms with rude or crude origins - "snafu" and "fubar" come to mind - but they have somehow made their way into the vernacular and shed that connotation. At least in some quarters, that's the case with rtfm, and that's why I used it.