Video shows what signature means. A person's name, written by that person, used to signify approval of accompanying material, ... ... <看更多>

The Oxford English Dictionary has this definition: In Spanish- and Portuguese-speaking contexts: a decorative flourish attached to a ... ... <看更多>

The problem is that PDFBox signing does not take the Lock dictionary into account. According to ISO 32000-1 (and also similarly ISO 32000-2): ... ... <看更多>