At first sight, a pathfinder resembles a wordsearch, in that it consists of a grid of letters and a list of words. In this puzzle, though, every grid-letter is part of one of the listed words and in fact, the grid consists of an unbroken trail of those words.
From the start-point, trace the single path of words that meanders up, down and sideways (but never diagonally).
For information on the interactive features of the puzzle, including how to use the Reveal/Verify functions and how to store an incomplete puzzle, click Help in the puzzle window.