QuickBASIC has stopped doing an item-by-item translation
of the program line at the highlighted item. The error
is ordinarily to the left of the item. You could
 
  a. Substitute one of the items suggested in the dialog
     box, immediately to the left of the highlighted item
 
  b. Correct any misspelled keywords to the left of the
     highlighted item.
 
  c. If you need to compare the structure of the problem
     statement with the correct structure, move the cursor
     to a keyword in the statement and press F1. The
     correct structure (or syntax) will appear in the
     Help window.