What is '<eof>'?

Getting Started Newbie Questions
#1

I am fixing an error in my app right now and I get this error that I don’t get .It says:

‘<eof>’ expected near ‘elseif’

That is not all of the error but I want to know what is <eof> .Even when I put <eof> near elseif it says unexpected symbol near elseif .

Thank you.

#2

end of file

#3

you either have an _ end _ statement in the wrong place or missing.

#4

end of file

#5

you either have an _ end _ statement in the wrong place or missing.