Create multilines in AutoCAD

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M lines give designers an interesting option.

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In AUTOCAD.

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M lines are used to create multiple parallel lines that can be used for example,

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in architecture to create walls

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or in civil drafting for roadways, parcel lots

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and property line layouts. And many other uses.

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The name M line stands for multi lines. However, these multi

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lines operate as one entity inside of Autocad.

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We'll start by taking a look at how to create M lines.

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I have a couple of poly lines in this drawing to show the difference

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of when we create an M line versus a polyline

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to get started with an M line type in the command M line,

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specify a start point

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and then dragging my cursor to the right.

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You can see that I have an M line created.

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Now if we start the command again,

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notice we have the option for justification

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scale

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and style.

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Choosing the justification option

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allows you to choose where the grip vertices will be located at.

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Notice we have a choice of top

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zero

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or bottom.

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The scale option allows you to enter a scale value.

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This is essentially the spacing between the different multi line segments.

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The style option allows you to select a multi line style which

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controls the display of what the multi line will look like.

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I'll cover the use of styles in creating them a bit later. In this lesson,

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one thing to point out here is if no options are selected,

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then the default settings will take precedence.

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This includes the justification,

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the last scale entered

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and the current multi line style specified in the drawing.

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If you double click on an M line,

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the multi lines, edit tools dialog box appears

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here. You can see a lot of different options for editing multiple multi

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lines.

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These commands are primarily used when different

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multi lines connect with each other.

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These editing commands will determine the display of

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these intersections between the different multi lines.