Altium has the ability to associate a zone as a netclass
(See: ‘Using a Blanket to Apply a Directive to Multiple Nets’).
They call these zones blanket directives.
Does KiCAD have anything like this?
No, as far as I know, KiCad does not have this.
The method of assigning a net to a net class in KiCad has changed quite a lot in the transistion from V6 to V7. It used to be a list of static names, handled outside of the schematic, and in V7 it has changed to three separate ways to combine nets and net classes.
- A rule based system in which you can use wildcards (and maybe even complete regular expressions) to put nets in a net class.
- A net class directive (label) you can put on a net to put it in a net class.
- A label can be extended with a net class name.
KiCad does have: Schematic Editor / File Schematic Setup / Project / Net Classes This is where you can enter the rules, and you can also assign colors and line widths to specific net classes.
1 Like
No.
There is already a gitlab-issue open which found some interested discussion, but as far as I know nobody is working on that feature.
2 Likes
Some spammer has twice decided to advertise blankets to this topic. As Bugs Bunny would say, ‘What a maroon.’ 
So, I’m closing it. Please start a new topic and reference this one if you really must.