Working directory
Changes2not staged yet
app.jsM
style.cssM
A addedM modifiedU untrackedD deleted
{ }select a file to edit
commit graph
A level is you typing real Git commands and editing files while the commit graph moves under you, all on one screen. That needs a keyboard and room for three columns.
Open it on a laptop and you will be rebasing within the hour.
git diff compares your files to the staging area. git diff --staged compares staging to the last commit. Most "where did my change go" confusion is reading the wrong one.
Three panels, one loop. Nothing here can touch a real repository.