[Miss Marple]

Oh...I thought you meant that you had to hold the alt key and just hit one number.

A computer whiz I am not.

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How many number codes are there? I ran through the 016 and 019 series.

[Consort]

Check here. Use the "Number" column and add the 0. The Number Lock must be "on" on your keyboard, as well.

[Fledermaus]

It's called ASCII...Google it and you can get the chart