[mqus]

whoops :D thought it was more international than this, since its pretty much as latin as etc. Interesting!

[jorams]

I read it as a little joke referring to C++, for what it's worth.

[maleldil]

What's the difference between etcpp and etc?

[fanf2]

The pp implies there are manny more things, as opposed to just some more things. https://en.m.wiktionary.org/wiki/etc._pp.

[mqus]

sibling is right, although for me its mostly a habit, I rarely use etc.