DescriptionUsagePlacement
Description
Setting this option before installing Gravity Forms on a single site WP installation or before creating new sites on a multisite install will automatically pre-populate your Gravity Forms license key for those new installations.
Usage
define( 'GF_LICENSE_KEY', 'YOUR-LICENSE-KEY-HERE' );
Placement
This constant should be set in your wp-config.php. See the article Wp Config Options.