@43907 Arrow to the left is a reply to post. Circle arrows are "boost", a way to promote. Star is like.

@43907 arrow is a comment reply like this. Boosting is circle. Star favors it.
You see these off you go too the bell at top of screen for notifications

@43907
↩️ Reply to a post
🔁 Boost a post
⭐ like
... More options

@43907

Arrow is to reply, middle symbol is to boost, star is to like and the three dots is a menu with other options.

If you check out @CoSoTips you can read the user's guide, which explains everything in great detail.

Have fun exploring 😊

@43907
Reply, repost, like, optionsmenu

@43907 Arrow is for replying to the message. Circular one in the middle is to share it. Star is to favorite it.

The three dots are more options.