the meaning of formula ='.'!H19

I found a formula as

='.'!H19

what is that mean and how to create it?
please help me
thank you

You have a sheet named . (dot is name of the sheet)

It returns value from cell H19 of the sheet .

How to get that formula: In some cell of other sheet write = select sheet . select cell H19 and enter

thank you for quick reply

unfortunately, there is no w/sheet with name '.', and no hidden w/sheet

Not '.'
Just a .

yes,just a . (dot only), but none

pls see the picture attach.
sorry just print screen, the file a bit secret

I see there is some Macro involved so probably it hiding it.

wow, if u said so,,,,,,
i give up, macro is locked & i have no password

btw, nice share

Probably that is a point.

macro create a sheet which you can not access which is used for some info or calculations.

It's like quiz questions which would hide answers on that page. No use if you can look at it

hi mr zbor,

could you please, give me a simply sample how to create it

thank alot