C 6.3.1. Handling marks C6 damage sub-categories: C 6.1. Rust accretion, foxing C 6.2. Glass-like layers C 6.3. Stains, accretion C 6.3.1. Handling marks C 6.3.2. Ink stains C 6.4. Ink corrosion C 6.5. Ink loss; fading C 6.6. Offset C 6.7. Ink flake off; detachment of the parchment C 6.8. Tears, splits C 6.9. Pleats C 6.10. Cockling C 6.11. Curling C 6.12. Pleats, double folds C 6.13. Folds C 6.14. Contraction, shrinkage C 6.15. Internal loss C 6.16. Edge loss C 6.17. Blooms; calcite deposits C 6.18. Micro-biological damage, mould, grazing C 6.19. Brittleness C 6.20. Rigidity, stiffness Stains and soiling caused by general handling of parchment, for example, in the corners of the sheets. Käsitsemisel tekkinud plekk. Pärgamendilehe nurga üldine määrdumus.