[amibroker] how to refer to the first bar plotted on screen?

["black_marubozu" <black_marubozu@xxxxxxxxx>]

hello,

is it possible to detect the very first bar displayed on screen so
that for example the following formula could be valid no matter
zoom/interval?

hhvscr = HHV(C, first_bar_on_screen);

regards,
B.M.



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