The manipulation of the VFP' STRINGS is not much efficient one,
but the following code show a TOO MUCH inefficient execution.

clear
FOR K=1 TO 10000000
NEXT

y=SPACE(0)
X=SPACE(16000000)

t1=SECONDS()
FOR K=1 TO 100
	 =LEN(m.x)
NEXT
? "read result only",SECONDS()-t1

t1=SECONDS()
FOR K=1 TO 100
	 =LEN(m.x+m.y)
NEXT
? "long+short is ok",SECONDS()-t1,"this read the long string, good !"

t1=SECONDS()
FOR K=1 TO 100
	 =LEN(m.y+M.X)
NEXT
? "short+long IS BAD",SECONDS()-t1,"this read AND WRITE the long string,badly, much evil "