Glossary and Acronym

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AAM
Application Activity Model
AEC
Architectural, Engineering, and Construction
AIM
Application Interpreted Model
AM 
Application module
AP
Application Protocol. These are the top parts of STEP with a 2xx part number. They refer to particular industries such as automotive design, shipbuilding and NC manufacturing
ARM
Application Reference Model. The application oriented data model in an AP which is then mapped to the IR for implementation purpose.
ATS
Abstract Test Suite
BOM
Bill of Material
BSI
British Standards Institute
CAD
Computer Aided Design
CAE
Computer Aided Engineering
CAM
Computer Aided Manufacturing
CAM-I
Computer Aided Manufacturing - International
CAPP
Computer Aided Process Planning
FEA
Finite Element Analysis
GD&T
Geometric Dimensional and Tolerancing
IDEF
ICAM (Integrated Computer Aided Manufacturing) Definition
IDEF0
ICAM Definition 0, a "function model"
IDEF1
ICAM Definition 1, an "information model"
IEC
International Electrotechnical Commission
IGES
Initial Graphic Exchange Specification
IR
Integrated Resource
ISO
International Standard Association
NC
Numerical Control
ANSI 
American National Standard Institute
PCA
Printed Circuit Assembly
PCB
Printed Circuit Board
PDM
Product Data management
SDAI
Standard Data Access Interface
SEDS
SC4 Enhancement and Discrepancy System; used throughout ISO TC184/SC4
STEP
Standard for the Exchange of Product Model Data
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