Ruby

 # Single line comment

=begin
multiline
comment
=end

# How to comment a single line

=begin
How to comment 
Multiple lines
=end

#comment only one line
=begin 
all comment here
=end

# This is a comment

=begin
This is a multiline comment
No-one uses them
You shouldn't either
=end

<%# This is a great comment! %>

# this is a comment and wont be executed
= begin
this is 
a multi line
comment in ruby
= end

# -single line comments

#Multipline comments
=begin
This are comments
=end

# single line comment

=begin
multiple line
comments
=end

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