System and Custom Variables are often referred to collectively as ‘Global Variables’ (as opposed to ‘User Variables’).
System Variables: General
The ‘ONLINE_HELP_URL’ is enabled by default and for new clean installs contains the URL to pi Documentation. If this field is populated, a ‘Help’ option will be available when users click the ‘More Options’ icon at the top-right of the dashboard.
Please refer to this section in our April 2021 Release Notes for more information. An existing ‘ONLINE_HELP_URL’ will NOT be changed.