I am working on a project right now concerning accelerometers that are attached on arduino UNO. I am trying to implement a step that I need help with. I have set up an algorithm that collects data from accelerometer. In that algorithm, I have also said that if the data reaches + or - 100 the data collected right before, print "working". Now, I have arduino GSM shield attached on it and I am using example send text message program (separate file from accelerometer algorithm). So, what I want to do is that when accelerometer algorithm says that "working" , I want to call the GSM text message file. How do I call another arduino IDE file into another arduino IDE file.