Within the curly braces of a tile definition or reference, you specify attributes and assign them values using the following form:
attribute = value ;
attribute is a valid keyword and value is the value assigned to the attribute. An equal sign (=) separates the attribute from the value, and a semicolon (;) ends the assignment statement. For example, the key attribute defines the name by which a program can refer to the tile, and the label attribute defines the text displayed within the tile. See Synopsis of Predefined Attributes for a complete list of DCL attributes.
whereWidth and width are not the same thing; True and true do not produce the same results.
As with tile names, attribute names and values are also case-sensitive.