You can input digits and symbols that need 'Fn' key combination, just by pushing one key multiply.

In the case of 'q' key, for example:
1st push --> 'q' will appear on text field
2nd push --> 'qq' will appear on text field
3rd push --> '1' replaces 'qq'

*Special Case*
"." key: "." --> ">" --> "?"
";" key: ";" --> ":" --> "&"

You can custmaize those behaviors on preferences panel.