Block strings, also known as multiline strings or here documents, are a way to represent a sequence of characters or text that span multiple lines of code or document. Block strings are typically used in programming languages to represent code snippets, comments, or multi-line strings in a more readable and natural way.
Block strings are usually enclosed within special syntax, which can vary between programming languages. For example, in Python, a block string can be enclosed within three double-quotes ("""), while in Ruby, it is enclosed within two less-than signs and a unique identifier (<<END).
Here's an example of a block string in Python:
my_string = """ This is a block string that spans multiple lines and includes line breaks and special characters like \t and \n. """
And here's an example of a block string in Ruby:
my_string = <<END This is a block string that spans multiple lines and includes line breaks and special characters like \t and \n. END