pcb-rnd - the [dynstyle] patch
Pcb-rnd doesn't have a hardwired limit on number of routing styles
anymore. Routing styles can be created on the fly and are saved to and loaded
from .pcb files.
There's no theoretical maximum explicitly set either. An implicit maximum
exists and is sizeof(int) - should be at least 2^31 on most systems.
save/load and compatibility
The first 4 styles are loaded and preserved by mainline. Styles above
4 would probably be deleted in a mainline load-save cycle. The number 4
is a constant value that can be changed if mainline is recompiled.
plans
GUI HID representation of styles (especially in menus) need more testing.