The following script should produce output which shows that a nested loop is executing. However, the inner loop only executes once. columns = 4 rows = 5 c = 0 r = 0 while(r < rows) say 'row '%r while(c < columns) say 'column '%c c = c + 1 endwhile r = r + 1 endwhile output... row 0 column 0 column 1 column 2 column 3 row 1 row 2 row 3 row 4