AutoCAD 23.1 Crack PC/Windows


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AutoCAD 23.1 With Keygen For PC [Updated-2022]

AutoCAD Crack Keygen In addition to CAD, AutoCAD includes utilities for technical, business, and database management.

AutoCAD was created to meet the needs of a burgeoning profession of industrial designers, engineers, and draftspersons. The initial purpose of the application was to perform the function of a drafting board, both in terms of providing a tool that was convenient and easy to use. With AutoCAD, users were provided with a method to enter drawing instructions, produce drawings, and share the information with other users. This created a revolution in the field of design by streamlining the process of creating professional-quality drawings from initial sketches to final documentation.

To keep up with the rapid growth of its user base, Autodesk released AutoCAD LT for the Apple Macintosh in 1988 and AutoCAD 3D in 1993. Both were for smaller businesses, with AutoCAD LT focused on single-user, desktop use and AutoCAD 3D on medium and large projects for enterprise environments. In 1997, Autodesk released AutoCAD R14, which introduced a number of new features and a redesigned user interface. In 2001, AutoCAD was acquired by the Autodesk and its name was changed to Autodesk AutoCAD.

AutoCAD R18, released in late 2009, introduced a host of significant improvements and the ability to work from a Windows PC and Mobile PC, on the Web, and from within AutoCAD LT. The company also rebranded the product as AutoCAD 2013.

This article is a user’s guide to the new and old AutoCAD versions, how they operate and how to use them.

This section will cover the history of the product, the design philosophy, the user interface, and the key concepts of AutoCAD. The sections that follow will cover the new features in AutoCAD 2013.

AutoCAD History

Autodesk AutoCAD software was created by a group of scientists and engineers, headed by Norman Tolkan, to help engineers and designers who were working with sheet metal, wood, and other flat, 2-D materials. It quickly became evident that what was needed was a system that would allow users to draw diagrams, drawings, and prototypes of physical objects, and AutoCAD was created to meet that need.

AutoCAD was released in two separate versions: AutoCAD LT (low-cost AutoCAD) and AutoCAD 3D (

AutoCAD 23.1 With License Key [March-2022]

CAD API supports applications, including third-party AutoCAD-based applications, which allow users to write extensions for AutoCAD to automate tasks, or add additional functionality. Many add-ons use their own coordinate systems, which can be redefined as a global coordinate system. If the global coordinate system is changed, all data in the drawing is updated to reflect the changes.

The “Extend” tool can be used to add functionality to the application. This allows, for example, to add buttons to the tools bar that let a user perform an operation. The “Extend” tool itself is an “Extend” object, but it is not integrated in the programming language. It is only used to create and edit custom objects which can then be included in the program.

There are many 3D CAD application tools that also support the CAD API. Many are aimed at the architectural design industry and have large 3D modelling and viewing libraries. They also support multiple document formats, including the Autodesk DWG and PDF formats, and have their own coordinate systems, and APIs and toolbars for rendering and animation.

Visual LISP

AutoCAD does not support visual LISP.


AutoCAD LT is a scaled-down version of AutoCAD, designed for use on personal computers. This version has a limited set of the features of AutoCAD, and the price is reduced to about $50,000. Like AutoCAD, LT does not support visual LISP and is limited to use with text-based programming. Newer versions of LT now include the AutoLISP features of AutoCAD as well as support for JavaScript and have the ability to run on OS X.

Intergraph has released Autodesk LT since its release. It is a scaled-down version of AutoCAD and it has limited support for Visual LISP. It can be used in combination with the App SDK. The LT is a multi-user application which supports up to 4 users. It supports multiple file formats, including the DWG, DWF and PDF format. In addition, it supports the BIM Exchange Format. Users have access to most of AutoCAD’s functions, however there are some features, for example the Coordinate System, that are not available to LT users.


AutoLISP is a visual programming language for AutoCAD.

AutoCAD 23.1 Free Latest

How to use the Crack?
Extract it! and copy the contents into the main directory of your game.

See also
Design Space (Autodesk)
List of Autodesk software
List of programs and super-lists of Autodesk software


External links
DesignSpace – Official web site

Category:Product lifecycle management
Category:Computer-aided design software for Windows
Category:Windows-only softwareThe objective of this research is to evaluate as chemotherapeutic agents a variety of microtubule-disrupting drugs including the taxoids, vinca alkaloids, and colchicine. The taxoids possess a broad spectrum of activity against human and animal tumors. The major disadvantage to taxoids as antitumor agents is that they are often highly toxic to both normal and tumor cells. The natural products vinblastine, vincristine, and leurosidine and the semisynthetic drug vindesine, all contain the dibenzyltetrahydroisoquinoline nucleus and possess good antitumor activity. They are, however, highly toxic. The mechanism of action of colchicine is unique and complex. Unlike the other drugs, colchicine causes the dissociation of the mitotic spindle and causes the redistribution of the cellular contents. This new property, coupled with the highly specific toxicity against normal cells, make colchicine and its congeners an attractive group of compounds for clinical trials. In this grant period, we propose to determine the mechanism of action of these drugs as inhibitors of cell division and to evaluate their clinical potential.Q:

delete the last word of a string using replace

I am trying to remove the last word from a string, not the last word from a file. For instance, if I have a string in a file, test.txt which contains:
This is a test string.

I want to get:

What I have done so far is to go through every character, and replace a specific word, but I am not able to get the word at the end. I tried using this function:
function replace_last_word($string)
return preg_replace(“/\bTest\b$/”, “”, $string);

However, this only works

What’s New In AutoCAD?

Cut, copy and paste enhancements:

Quickly cut lines, holes, arcs and text to and from components and drawings. Copy and paste new components, data and designations. Paste and click to update designations on existing components. (video: 2:30 min.)

Visibility enhancements for elements:

Make elements more visible by shading or changing their opacity, changing their shape, or removing their outlines. Apply shared transparency effects to multiple objects. And, create complex visibility effects using combinations of properties and object associations. (video: 2:30 min.)

Magnetic fit connectors:

The Magnetic Fit tool lets you quickly attach, align and adjust components and drawings to each other. Quickly align objects using the new magnetic fit properties. And, quickly attach and align components with the new Magnetic Fit tool. (video: 1:15 min.)

Visual Styles:

Automatically enhance, unify, and align your drawings by choosing a style, including a new visual style that’s based on the current cursor. Switch between styles on the fly and instantly create new styles with the new visual styles tool. Create a wide range of styles based on the current environment, surface, and orientation of objects. Use custom colors and styles for surfaces, dimension lines and text. And, to create custom shapes or more complex visual styles, create masks to modify any properties in your drawings. (video: 3:00 min.)


More control over levels of detail. Automatically control the visibility of hidden elements and keep hidden parts of your drawings from accidentally becoming visible when a drawing is open in the viewport. (video: 2:45 min.)

Customizable Color Palette:

An updated color palette lets you customize the colors and backgrounds used for ribbon text, strokes, lines, frames, grids and much more. You can even create your own colors by using your own color scheme. (video: 3:00 min.)

Improved Layers:

Control the visibility of layers, the objects and the properties of each layer. Layers let you organize your drawings into groups that work together. Or, group objects that need to be shown or hidden together. For example, you can hide objects that are the same size and weight as a group. Or, you can create an object group for the text of a legend or table. You can even control the visibility of objects and their properties based on the name of a layer. (video

System Requirements For AutoCAD:

OS: OS X El Capitan 10.11.2 (15A405)
Processor: 2 GHz Intel Core i3 or later
Memory: 4 GB RAM
Graphics: Intel HD Graphics 3000 or later
Storage: 300 MB available space
Network: Broadband Internet connection
Additional: Free Apple Music Subscription.
OS: OS X El Capitan 10.11.3 (15G42)
Processor: 2.7 GHz Intel Core i7 or later

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