The normal term separator is the comma. This is used to separate terms in lists and argument lists. A space must be used to separate an operator from an operand if they are both of the same token type (e.g. they are both alphanumeric tokens). The usual term terminator is the full stop followed by a space or carriage return. (A full stop not followed by a space or carriage return is treated as a symbolic atom.). A space between an atom and a left parenthesis, ’(’, is significant.ned with the implementation, maintenance and bookkeeping normally associated