Low: text strings


Quoting examples:

	text 10 13 5 90 hello world!
	text 10 13 5 90 hello\ world!
	text 10 13 5 90 "hello world!"
	text 10 13 5 90 {hello world!}

Qucs positional dead-end vs. footprint attribute:

	<Qucs Schematic 0.0.17>
	  <Components>
	    <R R1 1 340 130 -26 15 0 0    "1 Ohm" 1 "26.85" 0 "european" 0>
	 </Components>

>3_05.html