[syslinux] reference for console printing

[Ayvaz, James]

Hi there,
  Can someone suggest a good reference or documentation for the syntax used for printing to the console in comboot programs?  I have found a few examples but they don't go into much detail.  Thanks for the help.

Example:
void
clear_screen
{
  fputs("\033e\033%@\033)0\033(B\1#0\033[?25l\033[2J", stdout);
}