762Many studies of handwriting production implicitly or explicitly assume that writing a word consists merely of producing one letter after the other. For this reason, Van Galen's (1991) model of handwriting production postulated that we memorize and recall the spelling of words as abstract linear sequences that exclusively encode information on letter identity and order. The handwriting system would activate the orthographic representations of words such as set and sea as S 1 E 2 T 3 and S 1 E 2 A 3 and would provide these linear strings as inputs to the motor modules that deal with the programming of the movements needed to write them. According to this rationale, the timing of the production of E 2 should be equivalent for the two words, because they have the same identity and order. In a different perspective, the way we produce the movements to write E 2 could depend on the linguistic status of the letter chunk in which it is embedded. In sea, E 2 cannot be dissociated from a, because it belongs to a specific ea letter chunk that represents the phoneme / /. E 2 in set simply represents the phoneme / /. This tendency to group small units into bigger chunks is a well-known phenomenon that is particularly efficient for memorization (cf. Jenkins & Russel, 1952). The idea that, in writing processes, we recover the spelling of words by activating letter chunks is therefore quite appealing. The goal of this study was to provide evidence that the timing of the production of E 2 in set and sea should be different, because in set there is a one-to-one relationship between phonemes and letters, whereas in sea, this relationship is not straightforward and is more complex. If we generate letter chunks that represent phonemes, we could optimize the recall of spelling in a more linguistically oriented fashion.When a letter represents a phoneme, it is referred to as a grapheme. Coltheart (1978) defined graphemes as the written representation of phonemes. One-letter graphemes such as E 2 in set are simple graphemes, and letter chunks such as EA in sea are complex graphemes. So, to write sea-a three-letter but two-grapheme word-we should activate S 1 EA 2 and then "unwrap" the EA chunk into E and A for serial production. This conception of handwriting supposes that orthographic representations would not consist merely of linear letter strings encoding information on letter identity and order. They could be multilevel structures that encode information on letter chunks that obey phonological coherence.This idea is not new and was introduced by Caramazza and Miceli in 1990 on the basis of neuropsychological data. These authors presented a case study of an Italian Recent studies on handwriting production and neuropsychological data have suggested that orthographic representations are multilevel structures that encode information on letter identity and order, but also on intermediate-grained processing units such as syllables and morphemes. This study on handwriting production examined whether orthographic representations also ...