Variables' prefixes

Prefix

is used for type variables:

T Error
   String message

   F (message)
      .message = message

Prefix

is used for global variables:

V global_var = 0

F global_func()
   :global_var++

Prefix

is used for captured variables:

F global_func()
   V i = 0

   F local_func()
      @i++