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53 lines
2.5 KiB
Plaintext
53 lines
2.5 KiB
Plaintext
Example: ** Channel 1
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Subtitle: Television that can be referred to by channel
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Location: Understanding things by their properties
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RecipeLocation: Televisions and Radios
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Index: Channel 1. Television that can be referred to by channel
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Description: Understanding channels (a number) in the names of televisions.
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For: Z-Machine
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We might want to allow every television to be tuned to a channel (a number property) which the player could refer to, so that
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WATCH CHANNEL 13
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TURN OFF CHANNEL 4
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would be directed to the appropriate television object, if any television is turned on and tuned to the correct station. We might now write:
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{*}"Channel"
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A television is a kind of device. A television has a number called the channel. Understand the channel property as referring to a television. Understand "channel" as a television.
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The Office is a room. The widescreen TV is a television in the Office. The fifties TV is a television in the Office.
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Changing the channel of it to is an action applying to one thing and one number.
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Understand "tune [something] to [number]" or "change channel of [something] to [number]" as changing the channel of it to.
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Check changing the channel of something to:
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if the noun is not a television, say "[The noun] cannot be tuned to a channel." instead.
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Carry out changing the channel of something to:
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now the channel of the noun is the number understood.
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Report changing the channel of something to:
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say "You tune [the noun] to channel [number understood]."
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Instead of examining a television:
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if the noun is switched off, say "[The noun] is currently turned off." instead;
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let the chosen channel be the channel of the noun;
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if the chosen channel is a current channel listed in the Table of Television Channels:
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choose row with current channel of the chosen channel in the Table of Television Channels;
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say "[output entry][paragraph break]";
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otherwise:
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say "Snow fills the screen of [the noun]."
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Table of Television Channels
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current channel output
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0 "The screen of [the noun] is completely black."
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4 "A gloomy female news anchor describes the latest car bomb in Baghdad: 104 dead today, and no sign of change."
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5 "A couple of contestants in spangled scarlet outfits are performing an energetic paso doble."
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13 "On-screen, Ichiro is up to bat with one man on second and no outs."
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Test me with "change channel of fifties tv to 4 / x channel 4 / switch on fifties / x channel 4 / switch on widescreen / tune fifties tv to 5 / x channel 5 / x fifties tv / x channel 4".
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