This cleans the Instument column from the report assuming such a column exists (where instrument usually refers to the endoscope number being used.) It gets rid of common entries that are not needed. It should be used after the textPrep function. Note this is possibly going to be deprecated in the next version as the endoscope coding used here is not widely used.
See also
Other Endoscopy specific cleaning functions:
EndoscEndoscopist(),
EndoscMeds(),
EndoscopyEvent()