@AlanF_US

> You will please open the window.

This strikes me as a rather unnatural combination of the imperative ("Please open the window") and the future ("You will open the window"). Google Ngram Viewer shows that it's rare:

https://books.google.com/ngrams...20open%3B%2Cc0

I'm not sure whether it's downright incorrect, but I would avoid it.

A better way to say this would be "Please open the window."

By our guidelines, this one shouldn't have been deleted.

TRANG has asked us not to change things that are correct. It doesn't matter if they are slightly old-fashioned or rare.

From a language learners' perspective, it would be nice to purge the database of many of our less-than-natural-sounding sentences. However, that would likely lead to many arguments as to what sounds natural or not.

My English sentences can be edited by me if anyone requests this.

That's hardly surprising. Even native speakers don't agree on what sounds natural or not. As far as I'm concerned, my English sentences aren't exclusively directed to language learners and I think this website is OK with that. Anyways, if anyone suggests to delete one of my English sentences, I think that a good and sensible thing to do is to let me know before they take any action. After all, I can delete my sentences myself if there is no other choice.