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  2. National CAD Standard - Wikipedia

    en.wikipedia.org/wiki/National_CAD_Standard

    The NCS is composed of CAD layer guidelines from the American Institute of Architects, uniform drawing system modules from the Construction Specifications Institute, and BIM implementation and plotting guidelines from the National Institute of Building Sciences. Adoption of the NCS is voluntary, however adopting companies and agencies can ...

  3. CAD standards - Wikipedia

    en.wikipedia.org/wiki/CAD_standards

    In AutoCAD usually parts to be printed in black are drawn in 1 to 7 basic colors. Color layer: Green-Center, Magenta-Measure of length, and Blue-Hidden. Color layer: Green-Center, Magenta-Measure of length, and Blue-Hidden.

  4. ISO 13567 - Wikipedia

    en.wikipedia.org/wiki/ISO_13567

    Technical product documentation — Organization and naming of layers for CAD — Part 1: Overview and principles ISO 13567-2:2017 [2] Technical product documentation — Organization and naming of layers for CAD — Part 2: Concepts, format and codes used in construction documentation ISO/TR 13567-3:1999 (withdrawn September 2015) [3]

  5. AutoLISP - Wikipedia

    en.wikipedia.org/wiki/AutoLISP

    AutoLISP is a small, dynamically scoped, dynamically typed Lisp language dialect with garbage collection, immutable list structure, and settable symbols, lacking in such regular Lisp features as macro system, records definition facilities, arrays, functions with variable number of arguments or let bindings.

  6. AutoCAD - Wikipedia

    en.wikipedia.org/wiki/AutoCAD

    A man using AutoCAD 2.6 to digitize a drawing of a school building. AutoCAD was derived from a program that began in 1977, and then released in 1979 [5] called Interact CAD, [6] [7] [8] also referred to in early Autodesk documents as MicroCAD, which was written prior to Autodesk's (then Marinchip Software Partners) formation by Autodesk cofounder Michael Riddle.

  7. Dialog Control Language - Wikipedia

    en.wikipedia.org/wiki/Dialog_Control_Language

    It is only intended for providing simple dialogs within AutoCAD. It includes basic form widgets such as text boxes, buttons, checkboxes and list boxes. DCL is object-oriented; it allows re-use through inheritance and composition. DCL syntax is based on defining and using 'tiles'. A 'tile' represents a GUI widget such as a text box or a text label.

  8. ObjectARX - Wikipedia

    en.wikipedia.org/wiki/ObjectARX

    ObjectARX (AutoCAD Runtime eXtension) is an API for customizing and extending AutoCAD. The ObjectARX SDK is published by Autodesk and freely available under license from Autodesk. [ 1 ] The ObjectARX SDK consists primarily of C++ headers and libraries that can be used to build Windows DLLs that can be loaded into the AutoCAD process and ...

  9. Constraint (computer-aided design) - Wikipedia

    en.wikipedia.org/wiki/Constraint_(computer-aided...

    The shaft and pulleys share a common centerline. The constraints of the key are set in relation to the keyseat. A constraint in computer-aided design (CAD) software is a limitation or restriction imposed by a designer or an engineer upon geometric properties [1]: 203 of an entity of a design model (i.e. sketch) that maintains its structure as the model is manipulated.