console()NULL, invisibly.console function.
Then it stays open, until the user closes it.Another way to start it to set the verbose igraph option to
igraph_options. Then the console (re)opens
each time an igraph function supporting it starts; to close it, set the
verbose option to another value.
The console is written in Tcl/Tk and required the tcltk package.
igraph_options and the verbose option.