|ind||The index of the background to save.|
|fname||The filename for the saved background.|
This function can be used to save any background to disc, giving
it the specified filename. This image must be a
NOTE: Depending on the target platform that is chosen you are limited as to where you can save and load files from. See Reference - Files for more information.
The above code will save the background indexed in the variable "bck" as a *.png.