Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

F.cpp
void f() {
  try {
  } catch (...) {
  }

  try {
  } catch (int) {
  }

  try {
  } catch (int varname) {
  }

  try {
  } catch (int varname1) {
  } catch (long varname2) {
  }
}