Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

module.modulemap
module va_list_a { header "va_list_a.h" }
module va_list_b { header "va_list_b.h" }
module top { header "top.h" }
module left { header "left.h" }
module right { header "right.h" }