This new script was significantly more legible than the scripts used by Romans or that of the script earlier in the Middle Ages, and offered new features such as word spacing, more punctuation, an introduction of lower-case letters, and conventions such as usage of upper-case for titles, a mix of upper and lower case for subtitles, and lower case for the body of a text. Although Charlemagne was never fully literate, he understood the value of literacy and a uniform script in running his empire. Charlemagne sent for the English scholar Alcuin of York to run his palace school and scriptorium at his capital, Aachen. Efforts to supplant Gallo-Roman and Germanic scripts had been under way before Alcuin arrived at Aachen, where he was master from 782 to 796, with a two-year break. The new minuscule was disseminated first from Aachen, of which the Ada Gospels provided classic models, and later from the influential scriptorium at Marmoutier Abbey (Tours), where Alcuin withdrew from court service as an abbot in 796 and restructured the scriptorium.