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Undoing and redoing actions

From: AutoCAD 2011 Essential Training

Video: Undoing and redoing actions

If you ask most AutoCAD users what their favorite command is, Undo is usually the answer. That's because we all make mistakes and when we do, the Undo command will let us put things back the way they were. In this lesson, we are going to learn how to use the Undo command. On my screen, I have a mechanical drawing. this line work represents a gasket and in order to demonstrate Undo, I first have to do something. So I am going to make a design change to this geometry. Currently, this geometry has two tabs and the tabs are skewed 15 degrees. Let's say, I would like these tabs to be in perfect alignment.

Undoing and redoing actions

If you ask most AutoCAD users what their favorite command is, Undo is usually the answer. That's because we all make mistakes and when we do, the Undo command will let us put things back the way they were. In this lesson, we are going to learn how to use the Undo command. On my screen, I have a mechanical drawing. this line work represents a gasket and in order to demonstrate Undo, I first have to do something. So I am going to make a design change to this geometry. Currently, this geometry has two tabs and the tabs are skewed 15 degrees. Let's say, I would like these tabs to be in perfect alignment.

So I am going to rotate some of this geometry. I will move up and launch the Rotate command and I am going to select this line and this arc, this line, I'll select this circle and select the geometry for this slot and I'll select my center line. Then I'll right-click, I would like to rotate this geometry around the center of this circle and normally, I would rotate this 15 degrees to put these guys into a straight alignment. But remember, we are talking about Undo, so I am going to make a mistake. I am going to rotate this geometry 115 degrees and then I'll hit Enter and this is obviously wrong. That's alright.

I can fix it by using the Undo command. Undo is located here in the Quick Access toolbar. It looks like a backward facing arrow. Now, before I click this, notice there is also a forward facing arrow and it happens to be grade out right now. We will talk about this command in just a second. I am going to click Undo and notice that AutoCAD backs me up a single command. Also notice that the forward facing arrow is now available. This icon represents the Redo command. Redo will reverse the effect than Undo. If I click this, AutoCAD will put the geometry back to the previous position.

Now, I don't want to do this. So I am going to move up and click Undo one more time. Let me give you an important tip when using Redo. The Redo command can only follow an Undo. Notice, the icon is still available right here. But if I somewhat has panned my screen, I'll lose the ability to do a Redo. Alright, I would like to go ahead and make that design change again, except this time we will do it correctly. I'll launch my Rotate command and I will reselect this geometry and I'll right-click. I would like to rotate the geometry around the center of the circle and I would like to rotate it 15 degrees.

Now, at this point, since this is a straight line, l really don't need this to mention anymore. So I am going to erase it. I'll launch the Erase command, select the dimension and then I'll hit Enter. Now I have obviously got some gaps and I have got some overlapping line work. I am going to clean this up using Trim and Extend. I'll start by launching the Extend command and I'll select this line and this line as my boundary edges and I'll right-click and I will extend this arc and this arc and then I'll hit Esc. Then I'll move up and launch the Trim command. I will select this line and this line as my cutting edges and I'll right-click and I would like to trim off this arc and this one.

When I am finished, I'll hit Esc. Now, after making these changes, what if we were giving the direction to put this part back the way it was. Well, I can move up and click Undo, Undo, Undo, Undo to put this thing back or notice, there is a fly-out right next to the Undo icon. If click this, it brings up a menu that allows me to back up several commands in one step. Here is the trims that I just did, here's extends, Here's where I erased the dimension and here's where I rotated my geometry. I would like to take a way all of these commands all the way back through Rotate.

So I will select Rotate from the menu and notice my geometry is restored to the previous state. The Undo command is a lot like an insurance policy. No matter what we may do to our drawing, we can always restore our geometry by using the Undo command.

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This video is part of

Image for AutoCAD 2011 Essential Training
AutoCAD 2011 Essential Training

100 video lessons · 20593 viewers

Jeff Bartels
Author

 
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  1. 2m 8s
    1. Welcome
      1m 29s
    2. Using the exercise files
      39s
  2. 23m 33s
    1. Understanding model space
      3m 44s
    2. Accessing AutoCAD's tools
      3m 2s
    3. Leveraging dockable palettes
      3m 1s
    4. Monitoring the Status bar
      1m 28s
    5. Understanding the anatomy of a command
      2m 14s
    6. Customizing AutoCAD's preferences
      3m 13s
    7. Accessing help
      3m 38s
    8. Saving a workspace
      3m 13s
  3. 19m 42s
    1. Opening an AutoCAD drawing
      3m 2s
    2. Understanding mouse functions
      2m 44s
    3. Zooming, panning, and regenning
      4m 24s
    4. Working in a multiple-document environment
      2m 39s
    5. Saving your work
      2m 29s
    6. Saving time with templates
      4m 24s
  4. 14m 35s
    1. Constructing lines
      2m 20s
    2. Locking angles with the Ortho and Polar modes
      4m 49s
    3. Drawing circles
      4m 10s
    4. Activating the Heads-Up Display
      3m 16s
  5. 14m 48s
    1. Defining a unit of measure
      6m 28s
    2. Constructing geometry using architectural measurements
      4m 6s
    3. Working with metric units
      4m 14s
  6. 23m 45s
    1. Understanding the Cartesian coordinate system
      4m 53s
    2. Locking to geometry using object snaps
      7m 42s
    3. Automating object snap selection
      7m 26s
    4. Using temporary tracking to find points in space
      3m 44s
  7. 19m 30s
    1. Drawing rectangles
      4m 56s
    2. Drawing polygons
      3m 4s
    3. Creating an ellipse
      5m 9s
    4. Organizing with hatch patterns
      6m 21s
  8. 29m 46s
    1. Making geometric changes using the property changer
      3m 38s
    2. Moving and copying elements
      4m 28s
    3. Rotating elements
      3m 48s
    4. Trimming and extending geometry
      5m 10s
    5. Creating offsets
      6m 16s
    6. Erasing elements
      2m 46s
    7. Undoing and redoing actions
      3m 40s
  9. 11m 52s
    1. Selecting objects using windows
      3m 46s
    2. Adding and removing from selections
      3m 43s
    3. Using keyboard shortcuts
      4m 23s
  10. 51m 12s
    1. Creating fillets
      3m 52s
    2. Creating chamfers
      3m 51s
    3. Copying objects into a rotated pattern
      4m 20s
    4. Copying objects into a rectangular pattern
      4m 58s
    5. Stretching elements
      4m 4s
    6. Creating mirrored copies
      2m 12s
    7. Scaling elements
      5m 0s
    8. Leveraging grips
      7m 20s
    9. Exploding elements
      5m 47s
    10. Joining elements together
      3m 44s
    11. Editing hatch patterns
      6m 4s
  11. 32m 19s
    1. Understanding layers
      2m 43s
    2. Creating and adjusting layers
      7m 20s
    3. Using layers to organize a drawing
      9m 17s
    4. Changing popular settings using the layer control
      3m 30s
    5. Understanding the BYLAYER property
      3m 37s
    6. Restoring previous layer states
      3m 42s
    7. Using existing geometry to set the current layer
      2m 10s
  12. 37m 43s
    1. Creating single-line text
      3m 11s
    2. Justifying text
      5m 18s
    3. Controlling appearance using text styles
      6m 10s
    4. Annotating with multi-line text
      5m 10s
    5. Editing text
      4m 32s
    6. Creating bulleted and numbered lists
      3m 29s
    7. Incorporating symbols
      5m 28s
    8. Correcting spelling errors
      4m 25s
  13. 28m 37s
    1. Creating general dimensions
      4m 13s
    2. Creating continuous and baseline dimensions
      2m 13s
    3. Controlling appearance using dimension styles
      4m 57s
    4. Modifying dimensions
      6m 6s
    5. Creating multileaders
      2m 53s
    6. Controlling appearance using multileader styles
      3m 23s
    7. Modifying multileaders
      4m 52s
  14. 25m 19s
    1. Inserting blocks
      4m 34s
    2. Creating blocks
      6m 41s
    3. Leveraging blocks
      5m 39s
    4. Redefining blocks
      3m 1s
    5. Building a block library
      5m 24s
  15. 13m 50s
    1. Querying a drawing using rollover tooltips
      2m 9s
    2. Taking measurements using the Distance command
      3m 2s
    3. Modifying properties using the Quick Properties tool
      4m 25s
    4. Automating calculations using the Quick Calculator feature
      4m 14s
  16. 36m 6s
    1. Creating quick plots
      6m 4s
    2. Selecting a pen table
      5m 48s
    3. Choosing line weights
      4m 32s
    4. Creating a layout, pt. 1: Choosing a paper size
      2m 42s
    5. Creating a layout, pt. 2: Inserting a title block
      2m 29s
    6. Creating a layout, pt. 3: Cutting viewports
      6m 9s
    7. Reusing layouts
      4m 3s
    8. Organizing layouts
      4m 19s
  17. 16m 49s
    1. Using the Annotative property to automatically size text
      4m 13s
    2. Using the Annotative property to automatically size dimensions
      4m 34s
    3. Using the Annotative property to automatically size multileaders
      3m 58s
    4. Changing the scale assigned to annotations
      4m 4s
  18. 6m 56s
    1. Saving drawings to other formats
      2m 27s
    2. Plotting to the Design Web format
      2m 15s
    3. Plotting to PDF
      1m 20s
    4. Sending drawings via email
      54s
  19. 22s
    1. Goodbye
      22s

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