All values should be undefined: $a =
$b =
$c =
$d =
$e =
First of all assign a value:
Now we have some 'Umlaute': Now lets look what we are getting from this:
(this is the value in $a) (this is the value in $a) äöü
And now a and b together: (this is the value in $a)(this is the value in $a) äöü

Here we have some HTML tags within the perl code, Embperl will delete them!
57 Embperl will also translate HMTL escapes to the right characters i.e. $a &lt; 6 will get the perl expression $a < 6:
1 Now they should have a value $a = (this is the value in $a)
$b = (this is the value in $a) äöü
$c = 57
$d = 1
$e = 2

Ok.