The following information shall be provided for each data element as applicable: a. For data elements internal to the CSCI: 1. Name of the data element 2. A brief description 3. The units of measure, such as knots, seconds, meters, feet, etc. 4. The limit/range of values required for the data element (for constrants provide the actual value) 5. The accuracy required for the data element 6. The precision/resolution in terms of significant digits 7. For real time systems, the frequency at which the data element is calculated or refreshed, such as 10 KHz, 50 Msec, etc. 8. Legality checks performed on the data element 9. The data type, such as integer, ASCII, fixed, real, enumeration, etc. 10. The data representation/format 11. The CSU project unique identifier where the data element is set or calculated 12. The CSU project unique identifier(s) where the data element is used 13. The data source from which the data is supplied, such as database or data file, global common, local common, compool, datapool, parameter, etc. Where applicable, each source shall be identified by its project unique identifier. b. For data elements of the CSCI's external interfaces: 1. Identify the element 2. Identify the interface by name and project unique identifier 3. Reference the Interface Design Document (IDD) in which the external interface is described. (End Chapter 5)