Individuals applying for membership in the Questioned Documents Section shall have the scientific, technical, skill and experience to be engaged in the examination of Questioned Documents. This can include: Physics of Light Pertinent to Forensic Document Examination Procedures, Typewriter Examination Devices, Physical Properties and Matches of Paper, Writing Instruments and Inks, Handwriting, Alterations, Obliterations and Erasures of Documents, Printing Processes, Computer Printers, Photocopiers and Facsimiles.