Variables names are comprised of the letters A-Z, the numbers 1-9, and the underscore character "_". The first character of the variable name must always be a letter. As with the rest of EASI, variable names are not case sensitive, so for example, variables named "delta", "DELTA", "Delta" will all be considered to be the same. Variable names may be arbitrarily long. It is illegal to declare variables with the names as EASI keywords (that is, certain words that have special meaning to the language). For example, a variable may not be called "RUN" since "RUN" is an EASI command. Attempting to define a variable with such an illegal name will result in EASI generating an error. The following are some valid variable names:
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