[amibroker] How to plottext on the upper right corner of the screen

["itmwh" <toxutao@xxxxxxxx>]

I want to write some text on the upper right corner of the chart, I 
think the function "plotext" can do this job. But I do not know how to 
use AFL to identify the y coordinate of the "upper right corner" of the 
chart, as this coordinate changes from time to time . Can some one help 
me ?  



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