1 Overview
    1.1 Scope
    1.2 Organization of this standard
2 References
3 Conventions
    3.1 Terminology conventions
    3.2 Syntactic conventions
4 SDF in the design process
    4.1 Sharing of timing data
    4.2 Using multiple SDF files in one design
    4.3 Timing data and constraints
    4.4 Timing environments
    4.5 Back-annotation of timing data for design
          analysis
    4.6 Forward-annotation of timing constraints for
          design synthesis
    4.7 Timing models supported by SDF
5 Defining the standard delay format
    5.1 SDF file content
    5.2 Header content
    5.3 Cells
    5.4 Delays
    5.5 Timing checks
    5.6 Labels
    5.7 Timing environment
Annex A - Syntax of SDF
Annex B - SDF file examples