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OK, so we have a layout finished here again.

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Feel free to change it out as much or as little as you want.

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You probably want to get some road markings here.

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Maybe some signage you could draw in as blocks put them in, like all that kind of thing.

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But you know, let's do that.

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We've been over that.

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What we're going to do now is we're going to explore using some excerpts.

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Now, you may or may not need to be doing this at this stage, you might be happy just with this indicative

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kind of rectangle showing where the offices are, but what we're going to do, we're going to bring

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the layouts.

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For whatever reason, you might want to show the ground floor layouts so you can see the external doors,

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what kind of thing you might want to show the roof plan just so you can see how it looks.

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Regardless, we're going to do it more as an example of how chefs are used.

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So first thing I want to do, I want to go back to our world coordinate system, OK, and I'm going

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to click just so we're back in this world kind of coordinate view.

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And now I'm going to look at first bringing in the ground floor plan that we created.

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So I'm going to go up here to insert.

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And under reference, I'm going to go to attach.

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I'm going to pull this down, you can attach all sorts of different files.

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I'm going to touch a drawing.

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OK, so if you navigate to your project folder and go to your ground floor layout drawing that we have.

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OK.

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It's in the resources section.

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If you go to that and click open.

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But it's going to bring this in as an external reference.

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Now.

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I'm going to explain something here.

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When we created our floor plans, we drew those in millimeters, so one unit equals one millimetre.

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You know, a site layout we draw on in meters, one unit equals a meter.

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So really, we want our when we bring in our site plans, we want them to be scaled down by a thousand.

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Now, if we were doing that normally as a block or something, we'd bring it in and we'd scale it down

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by 0.001, which would be scaled down by a thousand when you attach an extra.

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If you can actually have the option, it all because our units are set up correctly, is detected that

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the unit is millimeters.

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And you can say it's got it's telling us it will factor that and it will scale it down by point zero

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zero one.

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So because we sell the units correctly in both joints, it's already also kind of intelligent enough

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to know that.

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So we don't need to change, we can bring this thing with a scale of one and we can let it do its thing

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with this hair set correctly.

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If it hadn't been set up correctly, you would have to say, OK, I'm going to uniform scale as 5.00

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one.

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But if we do that now, it's going to scale it twice because it's already doing it here.

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It will do it again, so we'll leave that set to one insertion point.

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Now, because it's a different scale, we can't we didn't draw it to actual coordinates.

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If you were inserting something as an external reference, let's say another company doing the landscaping

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and sent it to us as a file and it was done in the correct coordinates.

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We could just take that and just bring it in.

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And because it was both both drones were doing the correct coordinates to a scale, it would come in

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in the right place.

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And so a lot of times you will do that because everyone's working to the correct coordinates.

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And it's a good way of checking, making sure things come in at the right place.

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But in this case, we created it was just a floor plan, so it was just to its own coordinates, girl,

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so we can have to insert on screen where it is going and then you have rotation.

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Rather than try and work out what rotations can be, we're just going to select on screen, OK, and

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we're going to have this as an attachment.

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I'm going to click OK, and you'll see now our building comes in so we can see where our 00. was in

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the building.

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It was just where the crosses here.

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Now what I'm going to do, I'm just going to put it there.

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I'm going to vote for and I'm just going to put it there for now.

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And then I'm going to.

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Move it news in this corner of the actual building.

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Onto the aisle, then rotate it again, using that as a base point.

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But now, instead of president return, I'm going to I'm going to click on reference and the reference

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will be, I want.

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But corner to corner.

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So actually based on that angle.

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And now we have this external reference in our drawing.

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So if I now go down here.

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And you'll see this little is like a it looks like a paperclip and a piece of paper I icon, if I click

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on this, we get the extra manager.

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Extra effort is just a shortened way of saying external references are both the same thing.

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So we get our extra effort manager.

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The first thing you have is your actual drawing.

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You are in office part ground floor site.

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It just comes up at the top.

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Lots of drawer open telling you all the drawing files in this file and.

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The first one is always itself.

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Now, the second one here, this is an external reference and it's our ground floor site, so we can

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see now what is actually happening is if we were to load this drawing up, if we were to close it down

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and then load it up again, it would load up this this giant office park greenfield site layout and

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then it would look for another file, which is a ground floor, and it would load factor in the background.

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So that is the main difference with an extra and a block with an extra.

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If we haven't inserted this fall out into this drawing in terms of all the geometry, we've just told

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it.

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Load this file.

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And show it, display it on top, so none of that geometry, none of the file size of this is added

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to the current file.

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And you could have if this file of his office park greenfield site layout was only, let's say it was

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one megabyte file size and this office park layout was 10 megabytes.

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If you inserted this office part into your drawing, the whole drawing would become 11 megabytes because

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it would be 10 from the floor plan and one megabyte of site layout.

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So 11 megabytes in total worth of information with an extra F if you inserted it as an extra.

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If this file would still only be one megabyte because it's not, the information is only being loaded

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and displayed on top.

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It's not being inserted and it remains separate files and is a key difference with external references.

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Now what I can do just as a demonstration if I write this and go to open.

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OK, I'm just going to move it so I can actually open the file.

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Let me close out so I can open the file, and this is the original file here.

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And if I was to now, for whatever reason, someone came along says, I want a big circle in the middle

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and I want to delete all the internal while I want this internal wall and all the action.

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OK.

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Now, don't do this if you follow in love, because you might ruin your film, I'm just going to.

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Safer.

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OK.

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And if I go back here now, a little message pops up and it says an extra effort was modified.

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Reload it.

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And if I could really load.

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What's going to happen?

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Also, Cut is going to reload with the changes, and it takes you into this extra compare.

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This is now if this doesn't happen on your auto card, this coming in one of the recent ones, it might

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have been 2020 or 2021.

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What it used to do and what it might have done on yours is it just reloads and it shows a new layout

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and not set this extra off.

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Compare, it says, because obviously, if you haven't been told what changed, you wouldn't know.

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And so we used to off to hunt for and find out what actually what it's doing.

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It's highlighted in red the wall that was deleted and it's put this yellow box around the circle that

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was added.

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So it's highlighting what has changed, and you can just accept that it's just kind of a display.

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But now you can see it just reloaded a file and that's updated to show the latest layout.

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Well, I remember I am going to undo, undo, undo.

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And I go back and I'm going to click Save, OK?

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And again it all and again, my reload.

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And it's the opposite, so the circle has been deleted, it's in red and the wall has been added, it's

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in green.

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And there you go, so.

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But that demonstrates the power of extra office, if you imagine the landscaping was done by an external

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landscaping company.

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That would come in as an extra if we're loading.

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And then he did some changes he found, as I'm just about to email, you revision to.

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We've made some changes.

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OK, all we need to do is save up over the top of our old file.

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I'm next time you open a jar or if you've got to open, it will say reload and you reload and it will

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put in all that changes because it's an external reference.

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So X refs have two benefits two main benefits.

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One is that any change is done automatically.

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The second is it reduces a fire overall file size a huge site layouts can be split into many different

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items.

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OK?