if Rengine was initialized with
runMainLoop=false then this method can be used to start the main loop at a later point. It has no effect if the loop is running already. This method returns immediately but the loop will be started once the engine is ready. Please note that there is currently no way of stopping the R thread if the R event loop is running other than using
quit command in R which closes the entire application.
Definition at line 434 of file Rengine.java.