The console is a system than can report messages and a status to the user. It is usually the terminal the application is connected to, however it could be something else. This module allow to set a global backend for the application as well as composing backends.
module Backend : sig ... end
The main backend for the application
val print_user_message : User_message.t -> unit
Format and print a user message to the console
Print a message if the backend does not display the status line. This is needed so that the important status changes show up even when a
dumb terminal backend is used.
print paragraphs is a short-hand for:
print_user_message (User_message.make paragraphs)
val printf : ( 'a, unit, string, unit ) format4 -> 'a
printf fmt is a convenient function for debugging. It formats a string and then print it raw followed by a newline. It is the same as:
print [Pp.verbatim (sprintf fmt ...)]
For properly formatted output you should use
module Status_line : sig ... end
Status line management