Deleted section on printing, which is no longer valid. Renamed 'exporting' to 'saving' and moved to Basic workflow. Renamed 'basic concepts' to 'user interface'.
Deleted section on printing, which is no longer valid. Renamed 'exporting' to 'saving' and moved to Basic workflow. Renamed 'basic concepts' to 'user interface'.

ipython/ipython,ipython/ipython