Compare legacy and updated TRIM and EXTEND commands

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The trim and extend commands have been an AUTOCAD for quite some time

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prior to the 2021 release, their behavior was slightly different.

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We'll talk about the changes in 2021 in just a bit.

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But for now, let's take a look at how trim and extend work in their legacy behavior.

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You can access both the trim and extend commands up on the home tab of the ribbon

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on the modify panel

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and going to the trim drop down

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trim is the first command extend as a second command.

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Of course, like most other commands, you can type them in as well.

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Let's take a look at trim first

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in this situation.

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Maybe I want to trim this particular line in between these two lines

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in the legacy behavior. If I type in trim

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and then hit enter,

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what I would first need to do to be able to trim.

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This line is select these two lines as cutting edges,

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which I could select individually

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or I could use a crossing window

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and then right click for enter.

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And then when I hover over the line,

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it gives me a preview of what that trim command is going to do for us.

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The same behavior can be said with the extend command,

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let's say, for example, I wanted to extend these two lines

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up to this line where I just trimmed,

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I would go ahead and select

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the lines

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to extend to.

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And then when I hover over the lines that I want to extend, I get a preview.

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So then I could select them individually or once again,

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I could use crossing

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to extend those lines.

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Some other legacy behavior involves hatches

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if I were to draw a poly line

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across this hatch, for example.

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And then I wanted to use the trim command

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where the hatch would be the boundary.

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I would select the hatch.

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And then after a right click and enter,

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you'll notice that I can hover over the individual pieces of the line

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and each individual piece between the hatch pattern

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would be trimmed out.