Part 3 - Decisions and counting

Chapter 3(a) - Counting

Section 3(a)1 - Number of used rows

To decide what number is the number of used rows in (tbl - a table-name):
    let count be 0;
    repeat through tbl:
        if there is a used entry:
            if the used entry is greater than 0, increase the count by 1;
    decide on count.