"+" sign in a navigation tree?

[Geoff Hart]

Kevin McGowan wondered: <<What would be the "proper" term for the plus 
sign used to collapse or expand the list in a navigation tree? Is it 
just "the plus sign"? or is there something better? One of my QA guys 
just asked me what it's called, and I couldn't even think of it.>>

Unless you're specifically writing the docs for a user-interface API, 
it's better to treat this as the object of the sentence rather than the 
subject: "Click the [+] to expand..."

If you do need to name it? I've always heard it called the "expansion" 
button. For one authoritative source for that name: 
http://research.microsoft.com/~marycz/scope.pdf

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Geoff Hart   ghart at videotron.ca
(try geoffhart at mac.com if you don't get a reply)
www.geoff-hart.com
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