1. An operator interface for a machine, comprising: an operator interface device for receiving operator input corresponding to a requested machine function, wherein a machine function signal is generated in response to the received operator input; a help request device configured to receive an operator's request for information and generate a help signal; and a controller in communication with the operator interface device and the help request device, the controller being configured to provide information to the operator in response to receiving the help signal and the machine function signal, wherein the information relates to the requested machine function.