A character map file containing all the valid characters used in the dictionary. A character map file must be formatted as follows:
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It must be a plain text file called DICT35.MAP.
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It must contain all characters which are valid in a word. It should not include characters that are punctuation characters or spaces.
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These characters must be alphabetically sorted.
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Each line will contain the letter in upper case, a comma and then the equivalent letter in lower case.
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Where a letter is the same in either case (for example an apostrophe) list it twice with a comma separator.
Note: The default character map file (DICT35.MAP) for English contains 27 characters ('a' to 'z' and an apostrophe character)
Example:
A,a
B,b
C,c
...
Y.y
Z,z
','