How to view the map icon as a textdraw?

Hello guys, i saw in some servers that they're using textdraws to explain what is "some icon" means on the map.



Example: Let's say we want to explain what is ID 18 map icon means (the pistol icon)

So they use it like: The *pistol icon* that you see in map is the ammunation, go and get some guns.



They show *pistol icon* as an icon, how to do this?