They swing open outward but no cranks, and have no screens.
The short term option is going to be just wiring them shut.
Once it gets warmer, I would like to have the option of installing screens, plus whatever additional childproofing is possible to let the windows be used.
I'm reluctant to put in burglar proofing bars because that will make the windows impossible to use if there is a fire. The window frame isn't deep enough to accept the typical removable child gate that I use to temporarily block doorways.
Because the windows open out, I'm also reluctant to use some childproofing options I've seen which allow the windows to open just partway. I'm sure that a kid who leaned all of his weight against the windows could force the windows open.
So, is there some type of childproofing option which I can install on these windows? I'm hoping for something which allows for the windows to open, accepts screens, can be removed quickly by an adult, but not by a child.