A variable name can have up to fifteen characters. The characters can be alphabetic, numerals, underlines and characters in the range CHR$(128) to CHR$(254). (HP BASIC and some versions of HTBasic use the range CHR$(161) to CHR$(254).) The first character may not be a numeral or an underline. A variable name can be the same as a keyword if it is entered partly in upper case and partly in lower case. Variable names are listed with the first character in upper case and the remaining characters in lower case.
