Bach used some dynamic terms, including "forte", "piano", "più piano", and "pianissimo" (although written out as full words), and in some cases it may be that ppp was considered to mean "pianissimo" in this period.
Бах использовал термины "forte", "piano", "più piano" и "pianissimo" (написанные словами), и можно считать, что обозначение ppp в тот период означало "pianissimo".