I want to create a help window which, the users of my Excel sheet refer to.

I should be able to change the Contents of this help window without changing
the script (probably type this somewhere in another sheet).

I should be able to assign this to a button and with a click of which,
window should appear (no OK or cancel buttons, but the minimize, maximize and
close icons should be displayed).

User should be able to swithch between the help window and the excel sheet
(I don't want my users to close the help window to use the Excel)

Thanks,
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Baapi