In to or into?

While editing a work document, I kept encountering these two variations: in to and into.

I spent way too much time researching when to use which form, but I think I have a grasp on it now.

Into is a preposition, which means it’s a positioning word. Prepositions include words like before, after, over, under, around, through, on, etc.

𝗦𝗼, 𝗶𝗳 𝘆𝗼𝘂 𝗮𝗿𝗲 𝘂𝘀𝗶𝗻𝗴 𝗶𝗻𝘁𝗼 𝗿𝗲𝗴𝗮𝗿𝗱𝗶𝗻𝗴 𝗽𝗹𝗮𝗰𝗶𝗻𝗴 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗶𝗻𝘀𝗶𝗱𝗲 𝘀𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗲𝗹𝘀𝗲, 𝗶𝘁 𝘄𝗶𝗹𝗹 𝗯𝗲 𝗼𝗻𝗲 𝘄𝗼𝗿𝗱.

I remember the first time I used “i.e.” in a school report — I thought I was SO smart. Too bad I used the wrong term! I should have used e.g., because I was listing examples. 😂

𝗪𝗵𝗮𝘁’𝘀 𝘁𝗵𝗲 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲 𝗯𝗲𝘁𝘄𝗲𝗲𝗻 𝗶.𝗲. 𝗮𝗻𝗱 𝗲.𝗴.?