Tutoring web programming, you might encounter a question about Perl. The tutor mentions an observation.

Because inline styles use quotes, and then of course printing a string often uses quotes around it, a situation can easily develop in which nested quotes occur. In my experience, the nested quotes need to be different somehow, as

print "this text gives "that text" as its message";


seems not to work.

However, here are a couple of options:

1. Using different types of quotes for outer vs inner strings:
   print "enclosing 'inner string' string";
2. print "enclosing \"inner string\" string";

With the second option, the inner quotes are escaped. Then, Perl reads them simply as symbols rather than having specific meaning, so it just passes them along.

Source:

McGrath, Mike. Perl in easy steps. Southam: Computer Step, 2004.

Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.