Source code in the tcl programming language

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.
}