How can I find these in the object browser and what are these called?

local variable1 = anything

and the these options come up after you type the variable for autofill

what are these called in the object browser?

Thanks in advance

find, format and gmatch are string functions. They aren’t in the object browser because they’re not objects—they’re functions. I’m not sure what Pack is.

pack is a table function, you can read what it does with the provided link.