Producing Homepages

The tr (transliteration) function will rewrite a set of characters with another set. The format is:

  tr/current character set/new character set/;

For example:

  $input =~ tr/+/ /;        # replace all plus signs
                            #  in $input with spaces
  $answer =~ tr/a-z/A-Z/;   # change all lowercase letters
                            #  in $answer to uppercase

will replace all plus signs in $input with a space.