"Toujours pur" - Black family motto?

[kizor0]

No: HPFGUIDX 113922

Hi. This can't be the first time this subject is discussed but the
search tool of dubious usefulness came up with no other instances.

In "The Noble and Most Ancient House of Black" chapter six of OotP
(page 103 English hardback), the Black family tree features the words
'Toujours pur'. What on Earth does that mean?

The words sound like French, though with my patchy knowledge of the
languages of the region they could just as well be Belgian or
something (there isn't even any such thing, is there?). Internet
searches turned up very little I could comprehend. Babelfish
translates "Toujours" as "always" but "pur" as nothing. "Pour", on the
other hand, comes up as "for". It could be that "pur" has a meaning
but nothing that Babelfish can decipher, or that this is Ye Olde
French, or we might be dealing with a Clue here.

And to keep up with my habit of derailing my own questions, another
thing: With Pottermania constantly building, how's book 6 coming out
going to be handled here on HPfGU? I gather there was a spoiler-ban
for a set amount of time when Order of the Phoenix arrived. Making it
mandatory to mark all books containing spoilers in the subject line?
Creating a small side-list for discussion of the book while the
spoiler-ban expires?

- Kizor