I am relatively new to the website and just passed 2k reputation. This has opened up more options for reviewing posts, particularly, the "low quality posts." I've noticed that sometimes the option is to "delete" a post, whereas other times the option is to "recommend close." While reading: What are the differences among "on hold", "closed" and "deleted" questions? I was led (by links in the first comment) to https://math.stackexchange.com/help/closed-questions which suggests that only users with 3k+ reputation can cast close votes. I was just curious: if I "recommend close" is that "casting a close vote"? and if not, what does clicking "recommend close" actually result in?
From the Review queues FAQ:
If you haven't earned the close privilege, you'll be offered a Recommend Close option instead - this carries no weight on its own, but puts the question in a queue for privileged users to confirm or decline.
So, Recommend Close adds the post to the Close queue without casting a close vote on it.