Place the different letters of a word on a sheet of paper, and, without lifting pencil from paper, trace out a path linking on e letter to another, spelling out the word. Such a path may have loops emanating from a letter and returning to it (if the word has a doubled letter), or may have more than one link joining a pair of different letters (if a bigram appears in the word, and the same bigram or its reversal appears elsewhere in the word). This pattern of letters and links is called a spelling net; it can take on many different shapes depending on the way the letters and links are arranged on the paper.
Eckler, A. Ross
Word Ways: Vol. 13
, Article 3.
Available at: http://digitalcommons.butler.edu/wordways/vol13/iss3/3