A   here document   (or "heredoc")   is a way of specifying a text block, preserving the line breaks, indentation and other whitespace within the text.

Depending on the language being used, a   here document   is constructed using a command followed by "<<" (or some other symbol) followed by a token string.

The text block will then start on the next line, and will be followed by the chosen token at the beginning of the following line, which is used to mark the end of the text block.



Task

Demonstrate the use of   here documents   within the language.

Related task

   Documentation


set hereDocExample {
In Tcl, the {curly brace} notation is strictly a here-document style notation
as it permits arbitrary content inside it *except* for an unbalanced brace.
That is typically not a problem as seen in reality, as almost all content that
might be placed in a here-doc is either brace-free or balanced. 
The content of the braces is not interpreted at all; 
no substitutions are performed on it.
 
The sole exception is that there is limited processing of backslashes; 
a single backslash at the end of a line causes the end-of-line 
plus all whitespace at the start of the next line 
to be compressed to a single space.
}