n is an integer in the range 0—1000. The default value is 500.
history is the maximum number of entries held in the command line/read line recall buffer.
Changing This Parameter
On the Advanced Memory page of the Management Portal (System Administration > Configuration > Additional Settings > Advanced Memory), edit the values for history.
Instead of using the Management Portal, you can change history in the Config.config 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).
This setting does not require a restart to take effect.