What are the reserved words BEGIN or END used for in Ruby?

Question

This is a very hard to find word because in most cases they are not sensitive during a search. The best I could find outside of documentation is a test in IRB.

Answer 1

BEGIN and END is also used to comment such as:

=begin
This is a comment line
It can explain what the rest of the program is about
This was inspired from the perl style of programming
=end

You can check the same here: https://en.wikipedia.org/wiki/Comparison_of_programming_languages_(syntax)#Comments