My Setup > Defaults page in the Catalog/Drawing Properties

The Custom codes can be made up of a collection of concatenated properties (evaluated individually for each part), each property delimited by a single character (each of which is individually chosen).
The possible properties that can be selected from the drop list, as shown above, are:
The possible delimiting characters are:
| Delimiter | Delimiter | Delimiter | Delimiter | Delimiter |
| <null> = Nothing | ^ | // | x | [ |
| = Space | & | \\ | , | ] |
| @ | ? | _ | . | { |
| # | ! | * | ; | } |
| $ | / | - | : | < |
| % | \ | + | ( | > |
| = | ) |
An example of a Custom code using...
defines a code of...
(Type Group [Profile]Edge+Finish+Material_Colour)