Data push functionality was originally added to lanes to support pub-sub and remote data updates.
Since Lanes offers such an integrated environment, it knows exactly what files are being worked on and when they’re saved. From there it’s a simple step to ship the changes up to the browser and have it refresh the components that are affected. For CSS styles, the style link in the document head is refereshed.
This leads to a huge improvement to developer productivity. Even if the old alt-tab, ctrl-r dance is second nature, you’ll wonder how you ever functioned without it.