The new templates for Archicad 11 have an improved fill pattern for concrete in section, Concrete Random. I got it from Andy Thomson.
As you can see it has more size variety in the specks and is more random overall.
I've chosen to leave the old fill in place with its attribute ID unchanged. Why. To avoid potential conflicts when merging project stuff that has the old fill.
For new projects, this won't make any difference. All the composites, favorites, and standard details are set up. For running projects, it means some work to deploy the new fill.
So here's a pretty good list of everywhere you have to look to fully modify such a common attribute:
• Slab elements, including 'slab' slabs and footing slabs. In the 3D window, do a Find & Select for slabs of fill 'Concrete Lightweight'.
• Wall elements. In the 3D window, do a Find & Select for walls of fill 'Concrete Lightweight'.
• Other elements: A roof in the role of a ramp? A mesh for a slab sloping to drain?
• Favorites for any of the above need to be redefined.
• Composites for walls and slabs. Favorites with composites don't need to be redefined.
• Fills in drawing windows, primarily details, but including 'Drawing' sections, elevations, and interior elevations. There shouldn't be many of those.
The fills in the Material Symbols and assembly modules are a management responsibility.
It sounds like a lot but it really isn't, and the new fill looks a lot better.
You can use Attribute Manager to get the fill from either of the zTemplate 11 folder's .tpl files. Overwrite, not Append. (It will overwrite 'Concrete Structural', which is even lamer-looking and we never use it.)