Except for common code set, BBSFox also supports some 16 bits code like \x1b.
Here’s some common codes
Home = \x1b\x5b\x31\x7e or \x1b[1~
End = \x1b\x5b\x34\x7e or \x1b[4~
PageUp = \x1b\x5b\x35\x7e or \x1b[5~
PageDown = \x1b\x5b\x36\x7e or \x1b[6~
Arrow left = \x1b\x5b\x44 or \x1b[D
Arrow right = \x1b\x5b\x43 or \x1b[C
Arrow up = \x1b\x5b\x41 or \x1b[A
Arrow down = \x1b\x5b\x42 or \x1b[B
Enter = \x0d
space = \x20
^u = \x15
The users can choose the code on their own. For example, the default setting \x1b[A\x1b[B stands for sending an arrow down followed by a arrow up at idle time.