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Contents 1 Introduction

2 Basic features

3 Application overview

4 New features

5 Methods of operation

6 Extending

7 Autodesk Labs

8 Licensing

9 Contact


Before AutoCAD was introduced, most commercial CAD programs ran on mainframe computers or minicomputers, with each CAD operator (user) working at a separate graphics terminal. As the range and capabilities of these terminals evolved, users sought to access the same CAD program from more than one workstation. The need for flexibility and networked collaboration prompted the development of AutoCAD.

AutoCAD has become the de facto standard for computer-aided design and drafting. The Autodesk graphic community is the largest of its kind in the world and a worldwide network of users and contributors is in place to support and enhance the software. AutoCAD is one of the most downloaded software applications in the world.

Basic features

AutoCAD provides the following basic features:

Drawing and editing tools

Shapes and solids

Editing tools

Spatial coordinates

Thickness and distance


In addition, the following specialized tools and features are available in AutoCAD:


CAD axis

Planar view





Linear and angular constraints



Masking and colors

Color wheels

Filter tools




Text captions


Movement references

Two-way editing






Job management

Raster and vector drawing






The following drawing tools are available in AutoCAD:













Defining shapes

Paint bucket


Direct selection

Drawing methods




AutoCAD applications

As mentioned earlier

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The use of scripting languages in AutoCAD continues to grow, with some applications such as Combine, DesignSpark Mechanical, and Multimedia Design released by Autodesk which allow users to write a script for creating the automated process of building a house or a car.

AutoCAD has always used a Tcl/Tk-based scripting language to execute some applications, but the availability of a native ObjectARX language has allowed the majority of applications to be done within the software.

AutoCAD 2009 and later run on multiple operating systems, including Windows, Linux, and Macintosh. AutoCAD 2017 was the first release to support 64-bit architecture, including 64-bit versions of Windows, Linux, and Mac OS X. The earlier releases were limited to the x86 architecture. The 2009 release also includes the ability to connect to older (32-bit) AutoCAD versions via Direct3D; for example, AutoCAD 2006 and earlier versions can still connect and work with AutoCAD 2007. Since the 2019 release, the older 32-bit architecture is no longer supported.

AutoCAD was initially developed by Foster, Rheingold, and Pohl in 1982, as part of AutoDesk Inc.’s Graphics group. The first version was a utility software package for producing 2D vector graphics and the first CAD system to include a programming language.

AutoCAD 1999

The 1999 release of AutoCAD brought the object-oriented capabilities of Revit (released in 1996) to the smaller model, and introduced the “Graphics Area”. This replaced the previous “Drawing Area” and allowed the user to work on multiple model spaces at the same time. The Graphics Area was initially limited to two dimensions, but was later expanded to 3 dimensions.

The GUI had significant changes and was now based on Microsoft Windows CE, an operating system for low-powered mobile devices such as PDAs and cellular phones. It also introduced the concept of 3D viewports, which greatly improved zooming and panning functionality. The GUI was rewritten in C++, and introduced the ability to define custom menus and toolbars to customize the layout of the GUI.

AutoCAD 2000

The 2000 release made significant improvements to the 3D functionality of the software, supporting new operators and capabilities in addition to supporting the new millennium. New 3D modeling tools included face-to-face and free-form modeling and the ability to

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Novel mutation of the LHX2 gene in a family with bilateral posterior lobe agenesis, pituitary hypoplasia and hyperphagia.
LHX2 is a transcription factor of the LIM/homeobox family of proteins. It has an essential role in the specification of the posterior lobe and controlling of anterior pituitary development. Loss of LHX2 leads to anterior lobe agenesis with a subsequent phenotype of anterior pituitary hypoplasia and hyperphagia. We identified a missense mutation of the LHX2 gene in a Turkish family with two affected individuals with an unusual phenotype of bilateral posterior lobe agenesis, pituitary hypoplasia and hyperphagia. The genotype-phenotype relationship of LHX2 variants is still unknown. The purpose of this study is to delineate the effect of this LHX2 mutation on the human phenotype. A novel mutation c.1053G > A (p.S351T) of LHX2 was found in a Turkish family with three affected individuals with an unusual phenotype of bilateral posterior lobe agenesis, pituitary hypoplasia and hyperphagia. Alignment of the wild-type and mutant amino acids sequences was performed by UniProtKB. The functional consequences of the identified mutation were evaluated by in silico methods. This variant causes the loss of the highly conserved amino acids serine in position 351. This mutation is most likely the cause of the phenotype in this family. In silico analysis indicates that the mutation is damaging and is probably the cause of the phenotype in this family. The novel mutation of the LHX2 gene reported in this study is probably the cause of the phenotype in the present family. This study highlights the importance of LHX2 in the development of the posterior pituitary gland.Q:

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What’s New In?

Global Segment Names:

Make sure your design drawings are marked with easily identifiable geometry names that match throughout the drawings. With the new Global Segment Names feature, you can assign meaningful names to any segment in any drawing, even when that segment is the same size or shape as any other segment in the drawing. (video: 1:15 min.)

Geometric Search:

See the geometry of an object in seconds with the new Geometric Search feature. Just enter a search query, like “floor” or “wall”, and AutoCAD 2023 finds it. It can even search for specific materials such as “window glass” or “wood”. (video: 1:15 min.)

Shape Select Tool (Redesign):

To quickly add, edit, or remove a feature in a drawing, the new Shape Select Tool enables you to select any shape or segment to start creating a new object. You can use the new tool to create complex objects quickly with new object styles and functions. (video: 1:15 min.)

Convexity Set Tool:

Change the convexity of any shape to one of many preset settings (such as completely convex, convex-to-convex, or convex-to-planar). The convexity settings make it easy to quickly convert your drawings into levels, masters, or check templates. (video: 1:15 min.)

Sharpening Circles:

Quickly create circles that are perfectly sharp with the new Sharpening Circles tool. Use the tool to create circles with specific radii, and then apply the circle’s radius to any path or shape. (video: 1:15 min.)


Use AutoCAD 2023’s new openings feature to draw openings between segments. The feature automatically determines the best shape for each opening, and automatically opens and closes the edges. (video: 1:15 min.)

Shape Merging:

Merge identical shapes into one object. For example, you can use the new Shape Merging feature to join two identical segments into a single object. (video: 1:15 min.)


Create custom arrowheads with a text box and straight line segments. Easily switch between arrowheads that align or follow your drawing, or that are placed in specific locations. You can even create custom arrowheads

System Requirements For AutoCAD:

Internet Explorer 8.0 or newer
Mac OS X v10.6 or newer
Windows XP Service Pack 3 or newer
Recommended 2GHz or faster CPU
1024MB free hard disk space
Supported Languages: English, French, German, Italian, Japanese, Korean, Portuguese
Recommended System Requirements:

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