Experienced users can add code to the document <head> tag through FlightDeck.
Warning: Bad things can happen if you accidentally enter unsafe code here. Please contact us if you're unsure about this feature.
Open the FlightDeck extension (control panel)
Scroll down to Global <head> code
Enter your code
Submit
The output variable is located directly before the document's </head> tag.
</head>
Last updated 2 years ago