Denso BHT-BASIC 100 SERIES, Programmer'S Manual

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4.4 Identifiers
Identifiers for the names of variables should comprise the same alphanumerics as the labels.
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Rules for naming identifiers
• The identifier length should be limited to 10 characters including periods and excluding
$
(dollar sign) and
%
(percent sign) suffixes.
• Every type of variables can contain up to 255 identifiers.
• A reserved word cannot be used by itself for an identifier name, but can be included
within an identifier name.
• An identifier should not start with a numeral character or the character string FN . If start-
ing with an FN , the character string will be treated as a function identifier defined by the
DEF FN statement.
Examples of identifiers:
a
abcdef$
a1
a12345%