Staging Changes - Git Index
---------------------------

[graphviz]
----
digraph {
  edge [style=bold, fontname=arial, fontsize=24]
  node [style=bold, shape=folder, fontname=arial, fontsize=24, height=1, width=2]
  wtree [shape=plaintext, label="<working tree>"]

  subgraph cluster_git {
    label = ".git"
    fontsize=24
    fontname=arial
    index [color=red, fontcolor=red]
    index -> objects [label=" git commit ", style=invis]
    {rank=same; index; objects}
  }

  index -> wtree [color=red, dir=back, label=" git add <file>", fontcolor=red]
}
----

'Index' or 'Staging Area' is where the next commit is prepared