If you enter a command (starts with "/") that ChatZilla doesn't understand, then it can try "guessing" by sending the command to the server. You can turn this off if you don't want ChatZilla to try this.
Si se ingresa un comando (comienza con "/") que ChatZilla no entienda, puede intentar "adivinarlo" enviándolo al servidor. Se puede desactivar si no desea que ChatZilla lo intente.