use of subjunctive

Question

No apagues la luz del salón, por favor.Please don't turn off the light in the lounge.hi what's the rule for using the subjunctive here?thank you

Accepted Answer

Hola Julie,
It's a negative imperative form, so you need to use the subjunctive. You can learn more about this use of the subjunctive here.
Hasta pronto
Silvia

Answer

Hola Julie
Yes, it is a "command". Sometimes it sounds more like a "suggestion" but it's still the subjunctive:

No veas más a ese chico. 
Don't see that boy again. 
¡No pongas las manos ahí!
Don't put your hands there!
No vayas hoy al trabajo si estás enfermo.
Don't go to work today if you're ill.

Sometimes commands, sometimes suggestions.
Saludos

Answer

is it because its imperitive as in an order