Quotes

Customary	Generic	Meaning	Interpolates
”	q//	Literal	No
""	qq//	Literal	Yes
“	qx//	Command	Yes
()	qw//	Word list	No
//	m//	Pattern match	Yes
s///	s///	Substitution	Yes
y///	tr///	Translation	No

Any non-alphanumeric non-whitespace character can be used in place of /, e.g.: $single = q!I said, "You said, 'She said it."'!;.

The line-oriented form of quoting:

# with interpolation
  print <<EOF; 
The price is $Price;
EOF

# same as above
  print <<"EOF";
The price is $Price;
EOF

# no interpolation
  print <<'EOF';
The price is $Price;
EOF

# execute commands
  print <<`EOF`;
ls -al
EOF