n is either 1 (true) or 0 (false). The default value is 1.
When LineRecall is enabled (n = 1), both READ commands and command prompts can use the line recall feature. When not enabled, only command prompts can use line recall.
Changing This Parameter
On the Compatibility page of the Management Portal (System Administration > Configuration > Additional Settings > Compatibility), in the LineRecall row, click Edit. Select LineRecall to enable this setting.
Instead of using the Management Portal, you can change LineRecall 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).