Tag name conventions

When you name your tags, use a consistent naming convention if you need many tags with similar properties.

Follow these naming conventions for InTouch tag names:

• Use 128 characters or fewer in a tag name.

• Use an alphanumeric (A-Z, a-z, 0-9) as the first character of a tag name.

  A best practice is to use only alphanumeric characters for tag names.

• Use at least one alphabetic character in the tag name.

  (Optional) Use the following special characters:

  - Dash	! Exclamation point	# Number sign
  $ Dollar sign	% Percent	& Ampersand
  ? Question mark	@ At sign	_ Underscore

  If possible, avoid using special characters in tag names unless absolutely required by your application.

• Avoid using a dash (-) in a tag name.

  A dash is a valid character for an InTouch tag name. But, InTouch evaluates a dash as a negation or subtraction operator in logical or arithmetic expressions. For example, the expression A=B-C can be interpreted as A=B minus C or the tag named B-C is assigned to tag A.

  Hyphen or minus sign (-) will not be allowed when Tag Names start with a numeric character.

• Do not use blank spaces in tag names.

• Do not use a number in the tag name that can be interpreted as an exponential number.

  For example, you cannot name a tag 125E4 because it could be interpreted as a base number with an exponent raised to the fourth power.

• Do not use a number in the tag name that can be interpreted as a hexadecimal number.

  For example, you cannot name a tag 0x123B because it could be interpreted as a hexadecimal number.