Update README.md

README.md

@@ -3,8 +3,15 @@ BLC program
 
 Library providing command line program facilities
 
-- Parsing arguments
-- Interacting with the user in a terminal
+- 1. Parsing arguments
+- 2. Interacting with the user in a terminal
+
+BLC_COMMAND_LOOP
+
+- Eventually acquires the profiling data.
+- Check if it is the iteration limit and pauses in this case.
+- Wait for the kayboard or the waiting semaphores.
+- Ready to start, updates the timer.
 
 BLC program
 ============