AutoCAD R13 November 1994

AutoCAD Release 13 November 1994
Windows Enhancements -- AutoCAD Release 13

จะว่ากันไปแล้วAutoCAD รุ่นนี้เป็นรุ่นที่ใช้แล้วงงมาก เพราะมีในระบบ Window และ Dos เป็นยุคของการเปลี่ยนแปลงครั้งให่ครั้งหนึ่งเหมือนกัน โดยการที่ AutoDesk ส่งรุ่นนี้ออกมาเพื่อดูแนวโน้มของตลาดโดยส่ง Demo มาให้ดู ผมได้ดูแล้วยังมองว่ามันน่าจะทำให้คนใช้สับสนมากกว่าสะดวก โดยส่วนตัวผมไม่ค่อยจะชอบรุ่นนี้เท่าไหร่เลยครับ
Screen Layout

The AutoCAD interface consists of standard Windows user-interface components, similar to those used in other Windows applications. You can customize the size and placement of most components.

Floating Toolbars

A floating toolbar is a collection of commands organized by category, for example, Draw, Modify, or Dimensioning. You can customize and resize the toolbars or drag and drop tools from one toolbar to another. There is an icon editor. You can dock the toolbars at the edges of the drawing area.


Flyouts allow you to choose several different commands from the same place on the toolbar. The flyout contains either variations of a drawing command, such as the different ways to draw a circle, or it contains a group of related commands.

Layer and Linetype Display

The Object Properties toolbar contains a new display for easier control of layer and linetype settings.


Tooltips label the different commands on the toolbars. You see the ToolTip whenever you hold the pointer for a second or two over an icon in one of the toolbars. AutoCAD also provides more detailed descriptions on the status bar.

Command Window

The command window and the drawing area are separate, floating, and scrollable windows. You can use the scroll bars to pan around your drawing. The command line and the AutoCAD text window have been combined (the F2 key toggles between the two sizes). You can dock the command window above or below the drawing area. Cutting and pasting from the text window to the command window is easy.

New Menu System

The menu has been simplified; most commands are now available on toolbars. However, you can load a "full" menu that resembles those in previous releases. If you use customized menus, you no longer have to substitute your menu for the AutoCAD menu. Instead, you can add new items anywhere on the AutoCAD menu. This system prevents possible menu conflicts between different third-party programs.


AutoCAD for Windows acts as an OLE (Object Linking and Embedding) client as well as a server. This two-way linking makes it easy to embed objects from other Windows applications in your AutoCAD drawings.

Command Reference
The complete AutoCAD Command Reference in on-line format puts detailed information on every AutoCAD command at your fingertips. Electronic copies of all the AutoCAD documentation are included on the CD version.

Learning AutoCAD

The Learning AutoCAD for Windows is an on-line tutorial that contains ten lessons, designed to help new users master the fundamental AutoCAD commands. Each lesson focuses on a particular aspect of AutoCAD. An animated Demo button in each exercise shows how the drawing in that exercise is created. Learning AutoCAD for DOS and UNIX is a printed document.

Quick Tour

The Quick Tour introduces new users to the basic concepts of AutoCAD. The topics covered include:
+ AutoCAD Basics
+ 2D Drawing
+ 3D Drawing and Viewing
+ Printing and Plotting
+ Rendering

New ADS and AutoLISP Functionality

For information on new ADS functionality, see the AutoCAD Developer's Guide. For information on new AutoLISP functionality, see the AutoCAD Customization Guide.

Enhancements on All Platforms
Purge at Any Time

The PURGE command deletes unreferenced blocks, layers, linetypes, and dimension and text styles from the drawing database. In earlier releases of AutoCAD, the PURGE command had to be the first command issued in a drawing session. You can issue the command at any time.

Nonuniformly Scaled Block

You can explode a block that has a different X and Y scaling factor.

Drawing Preview

You don't have to open or attach a drawing to see what it looks like. A preview area in the dialog box displays an image of the selected drawing.

Multiline Text Editing

Release 13 introduces paragraph-oriented text handling to AutoCAD. You have full control over the formatting of the text. A dialog box allows you to assign fonts, apply color, and copy, cut, and paste text within the text object. Stacked fractions are supported. In the drawing, the lines of text flow within a rectangular boundary of a fixed width.

Spelling Checker

Spelling errors in drawings can be embarrassing. Release 13 provides a built-in spelling checker. You can run the spelling check on existing text objects in your drawing or on multiline text objects as you create them. Suspect words are automatically highlighted, together with suggested corrections.

TrueType Font Support

AutoCAD can now use TrueType and PostScript Type 1 fonts as well as standard PostScript fonts. User preferences control whether these fonts are displayed as filled shapes or as outlines.

Standards Support

Release 13 contains many enhancements for better support of local and user-defined drafting standards. You can add geometric tolerances to the text and dimensions in your drawings by means of a new Tolerances dialog box. AutoCAD contains a complete set of ready-defined blocks for standard arrows and tick marks.

Dimensioning Styles

Dimension styles are more complete, more flexible, and easier to use.

Dimension Style Overrides

All dimensions have a named style assigned to them. You can modify the style of any dimension object (per-object override) or modify the style of a series of dimensions (running override).

Dimension Style Families

You can create a set of related dimension styles for different dimension types in the same drawing (for example, angular and linear).


Multiple lines of annotation and per-character attributes are possible with multiline text features.


Leader dimensions are separate objects in Release 13. Leaders consist of arrowheads, lines, and annotation.

Access to Properties

New dialog boxes give you quick and easy access to dimension properties. Graphical displays show what components such as arrowheads and center lines look like as you create them.

Usability Enhancements

Linear Dimensions

You don't need to specify whether the linear dimension you want to draw is horizontal or vertical. AutoCAD infers the direction when you specify the first point.

Dynamic Editing

You can reposition dimension components dynamically using standard AutoCAD editing commands.

Mainstream Dimension Commands

Individual dimensioning commands such as DIMLINEAR and DIMCONTINUE are available at the same level as other AutoCAD commands rather than as options of the DIM command.

Associative Hatching

Associative hatching is hatching that is tied to its defining geometry. When you change the geometry, the hatch pattern automatically adapts to the changes.

Hatch Editing

Use the new HATCHEDIT command to change hatch patterns, angles, spacing, and so on, without having to erase and redo the hatch.

Boundary Hatching

The HATCH command automatically detects interior shapes and text in the objects to be hatched. The HATCH command has a new option called Direct. You can use it to draw and hatch a polyline with a single command.

New Object Snaps

Release 13 includes three new object snaps: Extended Intersection, Apparent Intersection, and Relative Point.


Enhancements to the EXTEND and TRIM commands allow you to extend and trim objects to their implied intersection with other objects. The new LENGTHEN command extends a line a specified length, by a percentage, or dynamically.


Release 13 adds the ability to fillet parallel lines. You can fillet or chamfer intersecting lines and polylines.

Object Grouping

You can group objects together with the new GROUP command. Grouped objects are logically related and are selected together as one object. With this command, you can create named selection sets.

New Objects

Earlier releases of AutoCAD approximated an ellipse by drawing a polyline through the points you specified. You can draw a true geometrical ellipse. Release 13 has a new SPLINE command to draw true splines defined as NURBS (Non-Uniform Rational B-Spline) curves. Grips work with both splines and ellipses.

Multiple Parallel Lines

Multiple parallel lines or multilines consist of up to sixteen parallel lines, offset from one another by a distance you specify. You can specify the properties of each line element and control intersections, corner joints, and end caps. You can also clean up the intersections of multilines after you draw them.

Construction Geometry

Construction geometry support consists of two new AutoCAD commands, XLINE and RAY. Xlines and rays are lines that extend to infinity in one or both directions. You can use them as a reference to create other objects by creating temporary construction lines to snap to. Xlines and rays have no effect on the extents of the drawing. Zooming and changing the view has no effect on them.

Linetype Enhancements

Linetypes have been extended to incorporate shapes and text. The linetypes that come with AutoCAD include a full set of ISO standard linetypes. You can apply a linetype scaling factor to individual objects.

Native AutoCAD Solids

Solid modeling is a quick way to build 3D models. You can make interference or other volume calculations, or add and subtract volumes to create new solids. Solids are represented as native AutoCAD objects. They behave like other AutoCAD objects and compute faster than AME (AutoCAD Modeling Extension) solids. Release 13 has a new command to convert AME models to AutoCAD solid objects.

Solid Primitives

Solid primitives are the basic building blocks that make up more complex solid models. AutoCAD Release 13 includes six primitives: box, sphere, cone, cylinder, wedge, and torus.

Boolean Operations

Boolean operations create a composite solid from two or more solids.

Swept Solids

You can also create new solids by extruding an object (adding height) or by revolving an object (sweeping about an axis).

Rendering Enhancements

Rendering enhancements in Release 13 include the following:
+ Spotlights
+ Colored lights
+ Light attenuation
+ Phong and Gouraud rendering
+ Wide variety of file formats for saved images
+ 3D Studio file import and export