Why isn’t the map form working?

The Ruby script that process the map configuration information given in the map form is very particular about what information it will accept. For example, if you enter a Maidenhead grid as fn31 instead of FN31, the program will not produce a map because the first two letters are supposed to be upper case. Similarly, the title will be rejected if it has non-printable or non-ASCII characters.

I wrote the program to be very strict about checking its inputs to ensure that people cannot cause the program to generate a hostile PDF.  Rather than trying to identify and detect all the bad things a malicious person might enter to generate malicious output, I have instead tried to ensure that only safe characters are allowed in the input.

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