The coexistence in the Gothic period of formal hands employed for the copying of books and cursive scripts used for documentary purposes eventually resulted in cross-fertilization between these two fundamentally different writing styles. Notably, scribes began to upgrade some of the cursive scripts. A script that has been thus formalized is known as a "bastard" script (whereas a bookhand that has had cursive elements fused onto it is known as a hybrid script). The advantage of such a script was that it could be written more quickly than a pure bookhand; it thus recommended itself to scribes in a period when demand for books was increasing and authors were tending to write longer texts. In England during the fourteenth and fifteenth centuries, many books were written in the script known as Bastard Anglicana.