Previously, narcotics were only prescribed via a triplicate pad; Duplicate prescription pads are typically written by hand. The prescriber copy (blue copy) is underneath the pharmacy copy.
However, EMR printer-friendly sheets are digitally printed and are void if the prescription is handwritten. The pharmacy copy and prescriber copy are printed side by side.
https://www.cpsbc.ca/registrants/programs/drug-programs/cpp/rx-pad/emr-faq