Remove module from the Mark5B recorder and put a red sticker over the green dot. The sticker will (should) be on the workbench under the whiteboard.
Go to the printer in the office and put a sheet of sticky labels into the printer's tray (printable side down, and make sure it's the correct size with 7 rows and 2 columns) and note the row and column of the label to be printed to (Counting from the top left of the sheet as you look at it in the tray).
On pcfshb, run
drudg <log file> all <x> <y>
where x and y are the row and column index of the label to be printed. for example:
drudg r4457hb.log all 2 3
Collect the printed label and put it on the front of the module where it says “Library Label”