Additional comments to help copyists in cross - checking were also noted. A system of abbreviated “codes ” was developed to record this information with extreme brevity.
इस जानकारी को अत्यधिक संक्षिप्त रूप से लिखने के लिए संक्षिप्त “कूट - चिन्हों ” की एक व्यवस्था विकसित की गई ।