Rem Comments start with "Rem" (VBA will change any alternate casing to "Rem")
Rem is an abbreviation of Remark, and similar to DOS syntax
Rem Is a legacy approach to adding comments, and apostrophes should be preferred
Rem Comments CANNOT appear after a statement, use the apostrophe syntax instead
Rem Unless they are preceded by the instruction separator token
Debug.Print "Hello World": Rem prints a welcome message
Debug.Print "Hello World" 'Prints a welcome message
'Rem cannot be immediately followed by the following characters "!,@,#,$,%,&"
'Whereas the apostrophe syntax can be followed by any printable character.
Rem Comments can appear inside or outside a procedure