Some layers needs to be supervised when printing. It would be a great help if the Ultimaker Display could show the current layer it's printing.
It would fit nicley on the firs row. Example
Printing layer: 167
NOTE: this is just my opinion and may not be shared by ultimaker...
While not explicitly open-source, the S5/S3 UI is completely written in qml and python with pyqt so, you can mod it
Note: this only goes for the S5 and S3, the UM3 display is compiled C++ code that is not open.
The information is in the procedure metadata of the print procedure.
so you need to change the __updatePrintJobState(self, printing_state) in the /usr/share/okuda/components/progre