Hello, to be honest – I have no idea. I never heard of
this. Can you specify the discussion a "right now" command was
If you want to stop loading/executing scripts while loading a
page, you can click the Stop symbol (X) in the location bar or
press cmd+period. The X can indeed be in the top right (in the URL
field), or in the form of an extra button anywhere in the location
bar, depending on how you customized TenFourFox.