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 Variable Naming Conventions
 
 ■ Variable names cannot be reserved words, but embedded reserved words are
   allowed with user-defined variables. Reserved words include all Visual
   Basic commands, statements, functions, operators, and other names
   recognized by the interpreter. See: ◄Visual Basic Reserved Words►
 
 ■ Variable names must be distinct from SUB and FUNCTION procedure names and
   symbolic constant (CONST) names.
 
 ■ Follow these naming conventions when creating arrays and variables:
   • Use 40 alphanumeric characters or fewer (upper- or lowercase)
   • Use type-declaration characters with variable and function names (%, &,
     !, #, @, and $)
   • If $ is used for a variable or function name, it must be placed at the
     end of name (for example, MyVariable$)
   • Begin array or variable names with an alphabetic character; only DEF FN
     functions can begin with "fn"
   • Do not use a period (.) in names of elements in a user-defined type
 
 ■ Follow these naming conventions when creating ISAM-specific arrays and
   variables (e.g. tables, columns, indexes, and so on):
   • Use 30 alphanumeric characters or fewer (upper- or lowercase)
   • Use alphanumeric characters only (no type-declaration characters, etc.)
   • If $ is used for a variable or function name, it must be placed at the
     end of name (for example, MyVariable$)
   • Begin array or variable names with an alphabetic character; only DEF FN
     functions can begin with "fn"
 
 See: ◄Variables Summary►