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    SubjectRe: elevator algorithm bug in ll_rw_blk.c
    Though in the UK, I was using the US definition.  I meant what we'd call
    a lift. Yes, many of the ones I've seen have separate Up and Down buttons.

    -- Jamie

    On Tue, Nov 17, 1998 at 02:59:21PM +0000, Riley Williams wrote:
    > >>> If you watch a real elevator you'll see they too use the elevator
    > >>> algorithm
    > >> They stop for passengers going up _or_ down.
    > > Not elevators I've seen -- they have Up and Down buttons and only
    > > stop for passengers going in the right direction, or when the
    > > elevator isn't in use.
    > I think there's some confusion over the term 'elevator' in this
    > discussion, so let me clarify the two possible definitions please:
    > 1. US definition: An elevator is a cage suspended on ropes that
    > moves up or down a vertical shaft depending on the whims of
    > the people in it. Known as a 'lift' in Europe.
    > 2. European definition: An elevator is a set of stairs that move
    > up or down (as set) continuously, with passengers stepping on
    > at one end and off at the other without having to move in
    > between. They are usually installed in pairs, one going each
    > way. I don't know what this is called in the USA.

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