Tom W.

Or assuming your trees are Plants, make the Height + Spread parameters By Instance rather that By Style, that way they can be edited on an object by object basis rather than every instance of the style being affected.

Yes I was surprised it worked as I'm sure too I've had issues in the past with it. Wow that would be amazing! Great to hear it's 'on the radar' 🙂

Aren't quoins normally just part of the wall...?

As long as the insertion point remains within the Wall all seems fine...: Or do you mean something else? The limitation for me is when you need the symbol to straddle a joint between two Walls...

have a look at Graphic Legends

I would just use unstyled Walls for the existing historic structure. By all means create a style initially (for the most common thickness of wall) then change the thickness in the tool preferences as required for other walls (which will have the effect of unstyling it).

Sure. But because the Wall Hole geometry is by default invisible you can include as much of it as you want + you're never going to see it i.e. you can include as much of it in all directions as you need to ensure that the symbol will be large enough for the largest Wall you might insert it in. But if you're including a 2D Component in the mix the same doesn't apply because you're going to see all of it. I thought this was the point @Matt Panzer was making + I wasn't sure what point @shorter was making in response: that the symbol should know the length of the Wall + somehow crop itself...?

Why would you ever want to see 2D Component geometry beyond the Wall ends...?

Or send the Door to front (Command-F).

Someone else will confirm but I dont think the design layer cut plane settings are working properly

Back at computer now. This is the setting to make sure you have checked for the VP:

Again be easier if you were to post a file so we can see what kind of objects the plants are + what the viewport settings are. If they are 2D it could be that you need to enable 'Show planar objects' (or whatever the setting is called) for the viewport...?

I thought the issue was that the grooves were not full height + therefore were not displaying in Top/Plan

How does it look if you use a Horizontal Section Viewport instead of Top/Plan Viewport?

Yes this is totally possible but be easier to demonstrate if you post a small file with the objects you're using in