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Yes, I think it would be best practice to have a controlling class for the symbol. Typically we set up symbols with interior classes to control graphics and give us the ability to turn off parts of the symbol - say room tags with extra info that we sometimes what to hide. But you would then want to create a dedicated class for that symbol so you can turn it off and on.

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I too do Symbols like any other group-like Parts, like Wall Styles or Windows.

Wall is always drawn/assigned to Class "WALL_0"

All Wall Components on their Component Classes like


So for Symbol Class and its Objects Sub Classes :





Replace "_" by "-" if you need Hierarchical Class Display as nothing beside "-" is

accepted to group Classes.

This way you can control Visibility of the whole Group and each Component separately.

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Guest Wes Gardner


This is the concept of a "container class" like other have mentioned -

Wall-Exterior will be the container class

Wall-Component-Drywall will be a component class (or sub-class if you will) for the container class

Any object can (and should) be set up this way as others have suggested. If you class it, you can control its visibility throughout your design/documentation process.

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On the other hand I realized some hours ago that nested things like

Symbols or Architectural Objects will prevent from using the

"Active Only" Visibility Feature.

You have to set all classes Visibilities manually,

because no Component will be seen as long as the Symbol Class is Off and vice versa.

So I think it can be useful to keep all Symbols itself on the "None" Class.

Maybe even Architectural Objects (?)

In this case You can switch off all Classes except the "None" Class and cycle through

your other Classes separately by setting it "active".

Having said this,

I often cycle through Classes to clean up things or check geometry,

it would be really cool if there could be a Class/Layer Filtering that temporarily hides

or sorts empty Classes/Layers to the end of the list.

Edited by zoomer
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i don't believe in a classing system that has no reference to the real objects, classified by national standards.

do you guys in the u.s.a. have this connection to the omniclass naming convention?

and how about the german version by computerworks? is there any link to any building elements' classification?


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The "None" Class ?

Don't know how far german or DACH VW goes.

I know that their Architectural Tools and some other included Goodies are better.

For me it looks that at least it brings all Swiss Standards.

But I am not current if there are complete Standards in Germany at all.

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