Problem: 'README.BAT'onafloppydiskandtypesREADMEtoseewhatthecommanddoes,hewilldeleteallthefilesintherootdirectoryofdriveC.Ofcourse,muchgreaterdamagecanbedonebyskilledandmaliciousprogrammers.
What's a sentence that uses these characters?
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'README.BAT' on a floppy disk and types README to see what the command does, he will delete all the files in the root directory of drive C. Of course, much greater damage can be done by skilled and malicious programmers.

Problem: Furthervideosstilltocomenextweek.
What's a sentence that uses these characters?
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Further videos still to come next week.

Problem: 21:4Allthiswasdone,thatitmightbefulfilledwhichwasspokenbytheprophet,saying,
What's a sentence that uses these characters?
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21:4 All this was done, that it might be fulfilled which was spoken by the prophet, saying,

Problem: Howisanemaildeterminedtobespam?-SPAMfighter
What's a sentence that uses these characters?
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How is an email determined to be spam? - SPAMfighter