Knorozov's key insight was to treat the Maya glyphs represented in de Landa's alphabet not as an alphabet, but rather as a syllabary. He was perhaps not the first to propose a syllabic basis for the script, but his arguments and evidence were the most compelling to date. He maintained that when de Landa had commanded of his informant to write the equivalent of the Spanish letter "b" (for example), the Maya scribe actually produced the glyph which corresponded to the "syllable", /be/, as spoken by de Landa. Knorozov did not actually put forward many new transcriptions based on his analysis, nevertheless he maintained that this approach was the key to understanding the script. In effect, the de Landa "alphabet" was to become almost the "Rosetta stone" of Mayan decipherment.