Some years ago I was in two minds about implementing dynamic dialogue boxes for the apps I was writing in Visual Studio. Revit does employ this dynamic dialogues and users should be aware of this. The advantage is that on can have a much more concise dialogue if the context is understood, while the converse is also true: inferences about Revit’s capabilities should not be made on appearances.

For instance: the availability of system families for transferral between projects is limited to the system families that exist in the project to start with. When I investigated the creation of a custom DWG Export Setup I initially concluded that one had to create a text file, instead of simply transferring it between projects. This was because the default DWG Export Setups are not recognised for project transfer. Below the defaults are shown.

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The default DWG Export Setup families are not available for transferring between projects.

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A custom DWG Export Setup is created.

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Now custom DWG Export Setups can be transferred between the projects.

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The default notching thickness parameter for a member is applied to facilitate inaccuracies and welding spaces. It is a little confusing as when an un-notched framing member is selected the <Instance Parameter><Structural> parameters does not include the <Notching Distance> parameter.

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After the beam has been notched, the Notching parameter is available.

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Note the state of the Decal Types dialogue box when the bump pattern is set to <none>.

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Now regard the change in the dialogue box when the BUMP pattern is set to select a file:

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Investigate all the controls in Revit and use intuition as a guide while investigating the user interfaces.