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) äöüäöü???<&+  
What is the EscMode? 7
Let's set the EscMode to 3
What is the EscMode now? 3
Now a Url: Here it goes
A Tag 2:   a2
A Tag 3:   a3
A Tag 4:   a4
A Tag 5:   a5
A Tag 6:   a6
A Tag 7:   x
A Tag 8:   x
A Tag 9:   x
A Tag 10:  x
A Tag 11:  x
A Tag 12:  x
A Tag 12b: x
A Tag 13:  x
A Tag 14:  x
FRAME:	   
IFRAME: