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
a
a
a
b is null
a
b is null
a
b is null

$tabmode = default

Display an two dimensional array with one, two and three columns !
Please take a look at the source in your browser to see the difference
$a[0][0] = '1/1' ;
$a[1][0] = '2/1' ;
$a[1][1] = '2/2' ;
$a[2][0] = '3/1' ;
$a[2][1] = '3/2' ;
$a[2][2] = '3/3' ;

$tabmode = default

a1/1
a2/1	a2/2
a3/1	a3/2	a3/3

1	2	3
a1/1
1	2	3
a2/1	a2/2
1	2	3
a3/1	a3/2	a3/3

b3/1	b3/2	b3/3
a1/1
b3/1	b3/2	b3/3
a2/1	a2/2
b3/1	b3/2	b3/3
a3/1	a3/2	a3/3

b1/1 b2/1 b2/2 b3/1 b3/2 b3/3 a1/1
b1/1 b2/1 b2/2 b3/1 b3/2 b3/3 a2/1	b1/1 b2/1 b2/2 b3/1 b3/2 b3/3 a2/2
b1/1 b2/1 b2/2 b3/1 b3/2 b3/3 a3/1	b1/1 b2/1 b2/2 b3/1 b3/2 b3/3 a3/2	b1/1 b2/1 b2/2 b3/1 b3/2 b3/3 a3/3

1

ii[0] = 0

ii[1] = 1

ii[2] = 2

ii[3] = 3

ii[4] = 4

ii[5] = 5

ii[6] = 6

ii[7] = 7

ii[8] = 8

ii[9] = 9