EXFOLIATION EXFOLIATION A thick, layered growth of loose corrosion prod- ucts often separating from the metal surfaces. EXIT An exit is the place where control leaves a routing. EXPANDER A device the restores the dynamic range of a com- pressed signal to its original dynamic range. EXPANSION The restoration of the dynamic range of a com- pressed signal to its original dynamic range. EXPORT ADMINISTRATION ACT (EAA) Any of the laws that have been codified at 50 U.S.C. Appendix 2401-2420. These laws were the original basis for the Export Administration Regulations (EAR) (15 CFR 368-399), which require obtaining a license from the Department of Commerce for exporting certain items and related technical data. EXPORT CONTROL LAWS Any law that regulates exports from the U.S. or requires obtaining a license to make such exports. EXTENSION (Projection) LINES Extension lines are used to indicate the extension of a surface or point to a location outside the part outline.