n is an integer in the range 0—3. The default value is 0.
ListFormat determines which values should be compressed within a list. The possible options for ListFormat are:
0 — no compression in a list
1 — $DOUBLE (IEEE) values in a list are compressed
2 — Unicode strings in a list are compressed
3 — Both $DOUBLE and Unicode strings in a listare compressed
If using lists with external clients (Java, C#, etc), ensure that the external client supports the compressed list format.
Changing This Parameter
On the Compatibility page of the Management Portal (System Administration > Configuration > Additional Settings > Compatibility), in the ListFormat row, click Edit. Enter the desired value for this setting.
Instead of using the Management Portal, you can change ListFormat in the Config.Miscellanous class (as described in the class reference) or by editing the CPF in a text editor (as described in the Editing the Active CPF section of the “Introduction to the Configuration Parameter File” chapter in this book).