What are 'indented writings', and how are they detected in CSI?: CSI And Document Examination

What are 'indented writings', and how are they detected in CSI?: Richard Saferstein (Former Chief Forensic Scientist) gives expert video advice on: What does a 'document examiner' examine in CSI? | What clues does a document examiner look for in handwriting evidence? | How is handwriting tested in CSI? and more...