Stems, namely quill

Right this is a numpty question but I'm at a bit of a loss.
What is the definition of a "quill" stem? is it the fact its all-in-one, or the size of headset it fits? I've searched but can't quite get the answer.

As i'm starting a build of my own I don't want to get a frame that won't be compatable with the stem i'm considering

http://www.sheldonbrown.com/handsup.html#threaded

It dips into the steerer tube like a quill into a pot of ink. Just a guess.

Damn, I thought i'd checked Sheldon's site.

his site is like the largest of mazes, endless twists and turns, great database interestingly layed out !!

Famously, quill stems are made of swan feathers...

u ask alot of questions, Mr. Brown has most of the answers!

What stem are you considering?

I have a quill adaptor for sale that allows you to use an A Headset style stem on a bike with a 1" steerer.

stef put me onto this
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=310087435578

It's part of my research into my 1st project
you all mkay have noticed i'm a numpty and useless at searching the net

Ok, nice stem. If you dont win it,look at Hub Jub for quills.

Do u have a frame already? I presume you know you'll need a 1" stearer with a Threaded fork to use a quill.

Ok, nice stem. If you dont win it,look at Hub Jub for quills.

Do u have a frame already? I presume you know you'll need a 1" stearer with a Threaded fork to use a quill.

I don't have a frame/fork yet. I need that base 1st but it's an option i'm looking at I noticed that the Soma Rush (£220 ish from the supplier) looks slick and clean lines and has 1" headtube

stef put me onto this
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=310087435578

It's part of my research into my 1st project
you all mkay have noticed i'm a numpty and useless at searching the net

That is a nice stem, rushed to see if it was 26.4 diamter....but no.
Been trying to find a nice and shortish 26.4 diameter stem for ages! Can anyone sort me out?