Use a character spacing setting to change the default spacing between characters

Prove that relational algebra queries are domain-independent. Hint: Use induction on the structure of the relational algebra expression.

What will be an ideal response?

Select a range in a spreadsheet then hit Tab continuosly,

a. The pointer will move from left to right scanning the whole table. b. The pointer will end up in the last column of the spreadsheet. c. It will cancel the range selection.