[[Property:title|Compile (and run) menu]]
[[Property:weight|1]]
[[Property:uuid|58af783e-7fc4-9fa3-2374-4143204948bb]]
The Compile command (i or I) in the main menu yields the following item menu:
<code lang=text>
	(A) Arguments    : set the arguments.
	(C) F-compile    : (re)compile the C code generated by finalize.
	(Z) Finalize     : finalize the system (discard assertions by default).
	(F) Freeze       : freeze the system.
	(L) Melt         : melt the system.
	(K) Quick melt   : quick melt the system.
	(R) Run          : execute the system.
	(W) W-compile    : (re)compile the C code generated by freeze.

	(H) Help         : show list of commands.
	(M) Main         : go back to main menu.
	(Q) Quit         : terminate session.
	(Y) Yank         : yank (save) output of last command to a file.
</code>

The most common compiling option is L (Melt): recompile the system, melting recent changes. The other compilation possibilities are F (Freeze) and Z (Finalize). After a Freeze you will need to C-compile the result using the W (W-compile) command; similarly, you can C-compile the result of a Finalize using C (F-compile).

{{caution|You cannot select a different project from within ec loop; also, you cannot select a different configuration file from within the command, although you may of course change the contents of the configuration file (for example by using an editor in an other window). }}

The R option (Run) runs the application. You will be prompted for the arguments if the application needs any.