Equipped with the right applications, a computer can be of great help in virtually any domain of activity. When it comes to designing and precision, no other tool is as accurate as a computer. Moreover, specialized applications such as AutoCAD give you the possibility to design nearly anything ranging from art, to complex mechanical parts or even buildings.
Suitable for business environments and experienced users
After a decent amount of time spent installing the application on your system, you are ready to fire it up. Thanks to the office suite like interface, all of its features are cleverly organized in categories. At a first look, it looks easy enough to use, but the abundance of features it comes equipped with leaves room for second thoughts.
Create 2D and 3D objects
You can make use of basic geometrical shapes to define your objects, as well as draw custom ones. Needless to say that you can take advantage of a multitude of tools that aim to enhance precision. A grid can be enabled so that you can easily snap elements, as well as adding anchor points to fully customize shapes.
With a little imagination and patience on your behalf, nearly anything can be achieved. Available tools allow you to create 3D objects from scratch and have them fully enhanced with high-quality textures. A powerful navigation pane is put at your disposal so that you can carefully position the camera to get a clearer view of the area of interest.
Various export possibilities
Similar to a modern web browser, each project is displayed in its own tab. This comes in handy, especially for comparison views. Moreover, layouts and layers also play important roles, as it makes objects handling a little easier.
Sine the application is not the easiest to carry around, requiring a slightly sophisticated machine to properly run, there are several export options put at your disposal so that the projects itself can be moved around.
Aside from the application specific format, you can save as an image file of multiple types, PDF, FBX and a few more. Additionally, it can be sent via email, directly printed out on a sheet of paper, or even sent to a 3D printing service, if available.
To end with
All in all, AutoCAD remains one of the top applications used by professionals to achieve great precision with projects of nearly any type. It encourages usage with incredible offers for student licenses so you get acquainted with its abundance of features early on. A lot can be said about what it can and can't do, but the true surprise lies in discovering it step-by-step.







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As an evolution of AutoCAD 2016, AutoCAD LT is a compact, inexpensive CAD program developed in 1989 to accompany AutoCAD and used primarily by individuals. In 2009, AutoCAD LT 2009 was introduced, which has better searching capability than previous editions. AutoCAD LT 2019 was released in 2018. AutoCAD LT 2019 has the capability to import and convert native ACIS files into DWG or DWF format.

Comparing AutoCAD LT 2019 and AutoCAD LT 2018

We compare AutoCAD LT 2019 and AutoCAD LT 2018 in terms of their user interfaces, their design, drafting and editing features, their capabilities and file format support.

User interfaces

AutoCAD LT 2019 has the same navigation, view and menu controls as AutoCAD LT 2018. The display mode dialog, the display of status bars, tooltips and the workspace functions are the same in AutoCAD LT 2019 and 2018.

The commands used to edit and display objects are the same as AutoCAD LT 2018, and the same as AutoCAD for Mac (Acr) and AutoCAD for PC.

The architecture of the interfaces is unchanged. To navigate the interface you use the menus, icons, the toolbars, and the keyboard commands.

The Menu bar contains the following controls:






Help browser

AutoCAD LT 2019 and AutoCAD LT 2018 have many common commands, like Move, Rotate, Scale, Align, Fit, Copy, Paste, Create, Destroy and Unscaled.

However, AutoCAD LT 2019 has some new commands. These include:






AutoCAD LT 2019 and AutoCAD LT 2018 have the same features, like unlimited selection, view and grid snapping, and creation of bordered and non-bordered polylines.

However, unlike AutoCAD LT 2018, AutoCAD LT 2019 has four levels of line selection; a user can select 1, 2, 3 or 4 levels of line selection.

AutoCAD LT 2019 and AutoCAD LT 2018 have the same Cautions, Warnings and Fields of View.

The user can edit graphics objects, filter, select and copy objects using the toolbars and menus.

We do not see any major changes

AutoCAD 2020 23.1

At the time of introduction in 2000, AutoCAD 2000 was the most powerful version of AutoCAD, and the first version with native Windows Vista support. It used CAD standards for export, which were enhanced in AutoCAD 2010. An important feature introduced in AutoCAD 2010 was the ability to create models of engineering drawings, thereby making the ability to view and edit engineering drawings in a native C++ class library. To date, this remains the only native CAD plugin for AutoCAD.

Over the years, several other extensions were released. In 2012, 3D capabilities were added to the native C++ class library. In 2014, complex solid modeling, which enables the creation of extremely complex 3D shapes, was added.

List of AutoCAD plug-ins

AutoCAD Architecture
AutoCAD Architecture is a solution for creating mass-produced building designs. Its basic principle is to develop a common shared file format for building designs, and use the CAD environment as a tool for creating the designs. It is not a “stand-alone” product, since it is designed to be used in conjunction with AutoCAD. It supports the common file formats such as 3D Building Information Model (BIM) and Architecture Design Drawing (ADD).

AutoCAD Civil 3D

AutoCAD Civil 3D is an architectural and engineering package, which enables the creation and editing of detailed engineering drawing.

AutoCAD Mechanical
AutoCAD Mechanical is a product designed to enable the creation of detailed mechanical parts. It works in conjunction with the product MechMatic 3D.

AutoCAD Electrical
AutoCAD Electrical is a product designed to enable the creation and editing of detailed electrical design drawings. It is licensed by Fluke Technologies, Inc.

AutoCAD Command Design

AutoCAD Command Design is a package for users looking to design the application flow of their CAD applications. It is a flexible package, which enables the user to build, and work with the application, by implementing the application flow on a component-by-component basis.

AutoCAD Composer

AutoCAD Composer is a package which is designed for users looking to build AutoCAD applications, by using a group of builder components.


An extension is a software that extends AutoCAD. Some of these are:

C++ Plugins
AutoCAD-based C++

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Retrieve Email from a website using Regex

I need to grab the email of a website from a user’s text input. I’m pretty new to regex and trying to get this to work. My first thought is something like:
preg_match(“/[_a-zA-Z0-9-]*@[a-zA-Z0-9-]*\.com”, $_POST[‘field_nname’])

I’m also not sure what to use as the search in the next line – I know you can’t use forward slash to search for an ending.
What would be the best way to accomplish this?


If you’re trying to parse a form, you might just grab the email field and use $_POST[‘field_email’].
If you’re trying to just grab the email value from some HTML, then you can use the “regex” search of RegExr.
I believe this code will work:
preg_match(‘/^[\w-.\+]+@[\w-.\+]+\.\w{2,}$/’, $_POST[‘field_email’])

For reference, here are the various bits of information about what is being matched:

^ – Matches the start of the line
[…] – Character class (aka “character set”)
\w – Matches any “word character”, usually letters and digits, and underscores
-. – Matches any character except.
+ – Matches one or more of the preceding element.
{n} – Matches exactly n of the preceding element.
\w{n} – Matches exactly n of the preceding element.
\. – Matches the character.
\w{2,} – Matches 2 or more of the preceding element.
$ – Matches the end of the line

Here’s an example of the above in action:
Note that this regex is written in PCRE (the Perl-Compatible Regular Expressions dialect), which is less “literal” than the default PHP regular expressions, so make sure you use the /i switch to get an “improved” regular expression engine.

# created by tools/tclZIC.tcl – do not edit

set TZData(:America/Swift_Current)

What’s New In AutoCAD?

To quickly incorporate ideas from printed paper or PDFs into your designs, you can use either the Import feature to automatically import and place the information or you can use AutoCAD’s Markup feature to add markup and annotations directly to your design. You can quickly track changes to designs with Markup Assist, as well.

Markup Assist in addition to the existing Markup and Markup Assistant features now supports marking up AutoCAD drawings with drawings created in AutoCAD Raster Designs. (video: 2:45 min.)

On-screen capture/rotate in place of printing:

Printing can be a time-consuming task.

If you would like to print a document on-screen, you can instead rotate the on-screen document so you can print it. This lets you print from one page, then just rotate the printout to the correct orientation. (video: 1:50 min.)


You can now work on a single design on multiple displays, using a feature known as Multi-Display. Multi-Display lets you view your design on multiple displays at the same time and has multiple benefits. For example, you can set an artboard that is viewable on all the displays at once. Or, you can view and print your work on a second display while viewing it on your main display. You can also view multiple views of your same drawing at the same time, using Multi-Display’s Markups or markers. Multi-Display also lets you view and zoom in multiple views of a design at the same time. (video: 3:00 min.)


Updates to the following features:

Flexible grids:

More flexible layouts, new feature options, better placement, and more.

New layout options are available to make placing and managing grids more flexible. You can now move and resize a grid independently. You can now use a grid to change the default paper size and choose new paper sizes. You can now choose to show grid numbers instead of crossing points.

A new ruler type is available that allows you to type numbers for the grid number to show or to use space to advance the grid display. (video: 4:45 min.)

The G-S grid is available to display the Global Set and the New Global Set. (video: 1:40 min.)

Dimension preferences:



System Requirements:

The game has a few different modes to play in, each with it’s own unique spin on rules to ensure that everyone can have fun.
1) Missions:
In this mode of play the only goal is to fight other players to win a match. The first person to win three matches wins. The first person to win 6 wins. This game has 2 game variants, one game for 4 players and one game for 6 players.
2) Campaign:
This is a full fledged single player campaign game where you take on missions against


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