The Tartessian script is very similar to the Southeastern Iberian script, both in the shapes of the signs and in their values. The main difference is that the Southeastern Iberian script does not redundantly mark the vocalic values of syllabic characters, which was discovered by Ulrich Schmoll and allows the classification of most of the characters into vowels, consonants and syllabic characters. As of the 1990s, the decipherment of the script was largely complete and so the sound values of most of the characters are known. Like most other Paleo-Hispanic scripts, Tartessian does not distinguish between voiced and unvoiced consonants ( from , from or from ).