 
       $ mix xref graph
       lib/a.ex
-      `-- lib/b.ex (compile)
+      └── lib/b.ex (compile)
       lib/b.ex
-      `-- lib/c.ex
+      └── lib/c.ex
       lib/c.ex
 
   This tree means that `lib/a.ex` depends on `lib/b.ex` at compile


      $ mix xref graph --label compile-direct
      lib/a.ex
      `-- lib/b.ex (compile)

  On the other hand, having direct compile time dependencies is not
  necessarily an issue. The biggest concern, as mentioned above, are the


  The `xref` task expects a mode as first argument:

      $ mix xref MODE

  All available modes are discussed below.

