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# How to Enter an Identifier

An identifier is a name which starts with a letter and contains only letters and digits. The list of allowed characters is specified in config file IDA.CFG. All names are case-sensitive.

Maximal length of a name is specified in the configuration file too:

            MAX_NAME_LENGTH=120     // Maximal length of new names

Default is 120.

Some assemblers have a shorter name length limit, beware!

IDA will warn you if you enter an illegal name.