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So we've looked at setting current layers and we've looked at layer names.

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Let's look at a few more of these options that we've got in here now.

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So.

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We've seen how we can turn things on and off.

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And we added some furniture and we turned those on and off.

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And we know we could, for instance, turn our internal walls off by selecting this.

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Okay, maybe we want to turn our hatching off like that.

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Okay.

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But we also have this column here, which is it's actually called Freeze.

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I'm the opposite to that is for.

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So this is one of those things a lot of people don't understand the difference between turning something

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on and off and freezing it and firing it.

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Okay.

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So.

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At first.

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Look, if I was to freeze the hatch layer, it disappears.

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Okay, So it looks like it's done exactly the same as turning it off.

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But there is two fundamental differences here.

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And I'll show you those now.

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There is a selection tool that is not used very much in AutoCAD, and that is just to type in all.

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And it basically means everything.

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If I was to say if I was to select delete, okay, and I type in a double L or all that's going to select

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everything and if I right click that, it's deleted everything.

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So let me undo that quickly.

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So that's delete all basically.

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And you can use that.

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You can move all okay and you can move it.

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But if you type in all that will that will select everything.

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Now if I turn off the hatch layer, okay, and I go delete all and delete it, it's gone.

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If I then turn on the hatch layer, nothing comes on because even though.

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That was turned off when I chose to delete all it, still selected it.

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If I freeze that layer, okay.

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And I go delete all okay and it's gone and then I for it or unfreeze it, it comes back.

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So that is a the main difference.

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Um, when you turn things off, it is just a display thing.

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You just turn it off the visibility of them, if you like.

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They are still there and they will still be selected by a lot of commands.

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When you freeze them, it removes them from the drawing.

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They can still be reloaded just by unfreezing it or firing it, whichever you want to say.

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But, um.

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The.

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Really they removed from the drawing and they won't be selected by any future commands until they're

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unfrozen.

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Also, that process of removing them, it means they're not using resources.

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So if you have something that's quite detailed, got lots of detail and it's really slowing your drawing

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down and making it hard to load, you can freeze that object and the layers of objects on.

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Okay.

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And it will it will it won't load it in.

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You'll see your drawing suddenly becomes a lot faster because it's it's freezing it out so it can be

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used to temporarily just stop loading some info while you do some work on your drawing and then you

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can load it back in again.

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It's like removing the object from the drawing with an option to bring it back in.

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So if you don't want if you rather than delete something that you might need later, you can consider

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just creating a layer.

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Sometimes I create a layer in a drawing and I call it temp delete or something like that, and I just

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fire it and anything I want rid of that I might one day need again, I put on that layer and it just

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helps you out there.

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So you're not you have I hate deleting things and you might end up the same way.

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You never really want to delete something in case you need it again.

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Maybe it's because I'm a bit of a hoarder, I don't know.

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But just freezing it makes that kind of.

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More user friendly, if you like.

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The next column is Lock.

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So anything if I let's go with the doors.

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If I lock that layer and I select objects.

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Okay.

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If I was to delete now you'll see the doors weren't deleted.

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I can't do anything with that because it's on a locked layer, so it won't let me do anything with that

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layer while it's locked.

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That's good.

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When you've got a busy drawing and you keep selecting things by accident, maybe you keep moving them

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or deleting them by accident.

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You can lock layers and it stops you selecting them color.

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Pretty self-explanatory.

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As long as things are set to be to have their color set by layer, then whatever color is in here,

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that's the color they will take on.

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Okay.

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And you have all these different ways of choosing colors.

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Depending how you want to go about it.

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Line type.

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Yeah.

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So in the lesson about line types, you'll learn all about them.

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You can set them by the layer system.

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Okay.

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In this layer manager Same with the line weights, transparency.

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How transparent.

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You can always can be set by the layer so you don't have to do it on lines.

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Individually, you could set all your doors to be fairly transparent.

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This hatching for instance.

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So you could you might set that to be 30% transparent.

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So it's a bit more faded and you can see objects inside the wall.

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This column here, print, maybe you don't want certain things to print.

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You could put notes on your drawing.

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For instance, this wall set to be demolished.

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I don't know.

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These lights not working, that kind of thing.

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And that would come up in your drawing, But it wouldn't print.

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You might not want it to print for whatever reason.

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If you didn't want something to print, you can just select its layer.

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And now when you print this drawing, the hatch in this case wouldn't print.

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Okay.

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Now.

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Viewport freezes.

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I'm going to I'm not going to look at those at the moment.

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That's this layer chapter is going to be quite early on because it's such a fundamental thing to know

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about layers.

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But if I start telling you about things like viewport freezes, you're really not going to know what

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I'm talking about because you won't have done the chapters on paper space and model space.

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Yet we will be doing a lot of viewport freezing in the actual example chapters when we get on to them.

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So just ignore that column for now.

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But these are the main settings you will do.

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You can have things not print transparent.

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The main action I do is freezing and turning things on and off in this layer.

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Manager Okay.

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So that's a basic overview of what layers are, how to create them and how to generally work with them

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in terms of color and line type and turning them on and off.

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You'll get to use them in the individual courses and you'll get to use it.

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Things like you'll get to look at things like layer control with Viewports later on.

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But that is a basic overview but can sound a bit complicated.

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I appreciate that, especially when you're not used to actually using them in practice.

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But believe me, when someone gives you a complex drawing and asks you to edit just one particular item,

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having the ability to just turn all the other items off and just work with that.

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So maybe you needed to edit all the windows.

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You can just turn everything off and it allows it's much easier.

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You're not selecting lots of different things by accident, especially in a busy drawing.

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That's when you'll appreciate layers.

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Okay, so that's an overview of the layer system in AutoCAD.