What you are seeing is VT100 ESC sequences. These sequences are/were used to position text on a computer
terminal. VT100 is/was a computer terminal built by DEC. A terminal is basically a monitor, keyboard that
connects to a server using RS-232 (serial port). The Console or termial window is a terminal emulator
(xterm etc) and the name is a carry over from these devices. VT100 is typically the default setting for
terminal emulators.
0x1B is the hex code for Esc, Esc[24;0H means move the cursor to row 24, column 0.
http://www.comptechdoc.org/os/linux/...x_hlvt100.html