The alias employs curl to send data to the server hosted at datafart.com. The parameter @- supplied to curl means, send the data on stdin as the body of the re

The alias employs curl to send data to the server hosted at datafart.com. The parameter @- supplied to curl means, send the data on stdin as the body of the request. So the user, via the alias, sending data to the server where it is processed, and the curl response is a URL to the temporary location of a viewable plot.