PERL doesn't care how you write code for the most part. A PERL script is comprised of declarations and statements. Your actual PERL code will normally be doing one of two things. You don't have to declare variables that you will be using ahead of time since any uninitialized variables and arrays start with a null or 0 value until they receive a value of their own. PERL comments work like shell script comments.
Comments can begin anywhere on a line.
I'm a comment.