Autocad divides dimensions into four main categories: Linear, Radial, Ordinate and Angular. 

Linear dimensions are usually for a line, or straight segments of a polyline. We can also use the linear dimensions for arcs and circles,
we will get a linear arc length and diameter of the circle.

Create a linear dimension, horizontal lines vertically, or rotate the dimensions.
This command replaces the command and DIMVERTICAL DIMHORIZONTAL.

Steps we have to do is:

From the Ribbon: Home tab> Annotation panel> Dimension drop-down> Linear
From the Menu: Dimension> Linear
From the Toolbar: Dimension

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  • To find a file :
    From the File menu, select Open.
    In the Choose File dialog box, select Tools Find.
    In the Find dialog box, in the Name & Location tab, specify the file type, file name, and path.
    On the Date Modified tab, select All Files, or select Search all files created or modified to specify a date filter.
    We can find the picture changed between a specific date range or a certain number of months or days.
    Select Find Now.
    Select one or more files from search results and select OK.
    In the Choose File dialog box, select Open.

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  • Step - a step we have to do change the color of the crosshairs is:
    1. Click the right mouse button> options or from the menu bar select tools> options
    or type op (OPTION) at the command prompt.
    2. Click the Display tab click color> Drawing dialog box appears Windows Colors.
    3. Select the element you want to change the crosshairs on the Interface menu element.
    4. On the drop down menu, select Color with the color red.
    5. Click OK.

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  • PAN command to move the view of the direction and distance that we do not show change the magnification. Real-time panning motion pictures when you move the cursor.

    Just like panning the video camera, panning the image we just change the position of the view we draw, not the location or object in the image magnification.
    We can shift the image in real time.
    To see a part of our current picture is not visible, we can use the Pan.
    To explore means means we have to move the screen without changing the magnification.
    Pan to see different parts of our pictures are not visible.

    To browse images, select the Update Pan from the Standard toolbar. cursor
    changes in the hand. Place your cursor anywhere in our picture, then click and drag on
    direction we want the object to go. Press Shift while you pan to restrict panning to
    vertical or horizontal direction. Pan can be used transparently, while we are in the middle
    other commands.

    Ribbon: View tab> Navigate 2D panel> Pan
    Menu: View> Pan> Realtime
    Toolbar: Standard

    Press Esc or Enter to exit, or right-click to display the shortcut menu.

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  • The method we just used to create the freehand sketch is known as the interactive method, where we use the cursor to specify locations on the screen. This method is
    perhaps the fastest way to specify locations on the screen. However, it is rather difficult to try to create a line of a specific length by watching the displayed coordinates. It would be helpful to know what one inch or one meter looks like on the screen while we are creating entities. AutoCAD® 2005 provides us with many tools to aid the construction of our designs. 
    We will use the GRID and SNAP options to get a visual reference as to the size of objects and learn to restrict the movement of the cursor to a set increment on the screen. The Status Bar area is located at the bottom of the AutoCAD drawing screen. The words SNAP, GRID, ORTHO, POLAR, OSNAP, OSNAP, OTRACK, LWT and MODEL appearing to the right of the coordinates are buttons that we can left-click to turn these
    special options ON and OFF. When the corresponding button is highlighted, the specific option is turned ON. These buttons act as toggle switches; each click of the button will toggle the option ON or OFF. Using the buttons is a quick and easy way to make changes to these drawing aid options. We can toggle the options on and off in the middle of another command.

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