##########################################################################

Authentication and host/port can be set via command line with one of these
patterns:

$ tremc -c homeserver



$ tremc -c homeserver:1234

$ tremc -c johndoe:secretbirthday@homeserver

$ tremc -c johndoe:secretbirthday@homeserver:1234

You can write this (and other) stuff into a configuration file:

$ tremc -c johndoe:secretbirthday@homeserver:1234 --create-config

No configuration file is created automatically. You must create it.

$ tremc --create-config

##########################################################################