The document discusses questioned documents and forensic document examination. It defines a questioned document as any document that is under scrutiny or of doubtful origin. It notes that thousands of crores are lost annually to financial frauds involving falsified documents. The scope of examining questioned documents is to determine authenticity, identify sources of handwriting or markings, and detect alterations. Examples of types of questioned documents include financial records, wills, contracts, identification cards, and electronic records. Preliminary examination evaluates documents for alterations, obliterations, or other issues before detailed forensic analysis.