Wall plan fill for Outlines Only

[Bruce]

When walls have their plan display set to Outlines Only, they use a cover fill to ensure their display is opaque.  My question is: where is this fill set?  I've looked in the wall settings, Work Environment settings, and Project Preference settings.

I can find out what this fill is (model a wall, then Save As an object...it will create a Fill parameter), but I don't know how to change it.

[Barry Kelly]

That is a good question, and I don't see any answer for you.

'Outlines' assumes you want to see the wall as it would be below the cutting plane. i.e. looking at the top of the wall.

You have control or the perimeter line type and pen, but not the cover fill (walls don't actually have a cover fill).

The fill is just solid fill using the screen background colour (pen -1) which you have no control over.

All you can do is use the display order to send behind other elements.

Barry.

[Bruce]

Barry - yes, that's what I had concluded years ago.  What threw me for a spin was recently creating an object from walls set to Outlines Only, and getting a created Fill parameter set to an obscure fill.  It was created from the Solid fill being used as the 'cover fill' (for want of a better term) for the wall...but the odd thing is that this particular Solid fill was index #10 in the attributes, and there was a different Solid fill in the attributes with a lower index number.  The fill is also set to Drafting and Cut only...not Cover.

Also, if I change the opacity of this fill it will affect other placed elements using this fill (slab cover fills, fills etc)...but not walls set to Outlines Only.  So clearly there's some hidden magic happening.

I guess it's a curiosity itch I'm trying to scratch more than anything else.