this.log_msg("commands common to study and play mode:");
this.log_msg(" " + movement_keys_desc + " - move");
this.log_msg(" " + this.keys.switch_to_chat + " - switch to chat mode");
this.log_msg("commands common to study and play mode:");
this.log_msg(" " + movement_keys_desc + " - move");
this.log_msg(" " + this.keys.switch_to_chat + " - switch to chat mode");