Use string operands in expressions

You can use character strings in the place of tags as operands with the plus (

+

) arithmetic operator and with relational operators.

The

+

operator will join string operands. For example, if the values of tag_1 and tag_2 are

SOME

and

THING

, the expression

tag_1+tag_2

would return the value

SOMETHING

.

When you use string operands with the relational operators, the initial character of the operands is evaluated first by capitalization and then by alphabetic order. Lower case letters are greater than upper case letters.