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The form may also provide a help button offering additional information about the values it collects. Try to make it clear what you expect from the user by providing a good, initial description and clear labels in the form. Only provide an overall explanation in a help screen through the help button, if this is not enough.
Note that the dialog must not change its size to fit the help screen, but should retain its current width and height. If the help text does not fit into the current dimensions, provide a scroll bar.
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