SMPTE RP 39-1993

This practice specifies the necessary handling changes in the laboratory, film exchange, and projection room to achieve the emulsion-in orientation of theatrical release prints.
The practice also describes the advantages to be gained by the change to emulsion-in orientation of theatrical release prints.
The practice further discusses the consequences of returning to the emulsion-out orientation during the exhibition life of theatrical release prints.
The practice suggests, in the annex, the various minor modifications that might be necessary in equipment used for projection, film rewind, and film inspection.