Defines a range table.
(ade_rtdefrange tabname description range_defn)
Returns a range table ID or nil.
| tabname | Range table name (string); can be up to 31 characters long. Must be unique, contain no spaces, and start with an alphanumeric character |
| description | Range table description (string) |
| range_defn | Range table definition (string) |
A range table allows you to alter properties of queried entities conditionally. It contains a set of property alteration values from which a single value is selected depending on conditions obtaining in the queried entity to be altered.
The range_defn argument is a range table definition, a list of range expressions. Each range expression includes (1) a condition and (2) a property alteration value to return if the condition is true. This information is expressed as a list of three elements: a range table operator and a comparison value (which together make up the condition), and the return value. You must state each value explicitly. You cannot substitute an expression.
See Using a Range Table for more information.