The tab is displaying the contents of index.html, which is the lastfile you edited in the Sources panel. The Quick Source tab gives you the editor from theSources panel, so that you can edit files while having other panels open.
The tab is displaying the contents of index.html, which is the lastfile you edited in the Sources panel. The Quick Source tab gives you the editor from theSources panel, so that you can edit files while having other panels open.