Offset for AFL functions

[yellayi@xxxx]

Hi Tomasz,

Thanks for your reply on the question on indexes. Is there any way to 
add an offset to afl functions. I would like to find out , let us 
ssay , Moving average 10 days ago. How can I do this? In quotes plus 
it is 
close(-10) < EMovAvg(-10,20,cl) ; /* 20 DMA 10 days ago */

How can I do this in afl?

As a related point, I also would like to find out relative strength , 
a few days ago . How can I do that too? As an example , please look 
at the folowing code

RS=relstrength("SP-500");
rs_spx30=EMA(RS,30);


A second question relates to watch lists. Can I import symbols into 
watch lists; as atext or csv file? If I want to have S&P 500 as a 
watch list; can I import these symbols?

thanks 

mohan