What is Cos?
In many ways, Cos is to PDF what XML is to SVG (Scalable Vector Graphics). Cos object system provides the low-level object types and file structure used in PDF files. PDF documents are graphs of Cos objects. Cos objects can represent document components such as bookmarks, pages, fonts, and annotations, etc. PDF is not the only document format built on top of Cos. FDF (Form Data Format) and PJTF (Portable Job Ticket Format) are also built on top of Cos. The Cos layer deals directly with the data that is in a PDF (or Cos based) file. The data types are referred to as Cos Objects. There are eight data types found in PDF files. They are arrays, dictionaries, numbers, Boolean values, names, strings, streams, and a null object. In order to retrieve or modify PDF (or other Cos based) content, you need to understand these objects. You can destroy existing objects, create new objects, or modify the data in objects in PDF files and other Cos based documents. For a detailed description of Cos lay
Related Questions
- The directions for completing the work history section on the COS application instruct the applicant to list their work history in reverse order from the old application. Why is this?
- The Community of Science (COS) Funding Opportunities website says that the TRDRP application deadline is in January. Are there two deadlines this year?
- what is the limit of (1-(cos(2x))^n)/(x^2) when x approach to 0
