Printronix ThermaLine Series - Manual (Page 41)

PTX_Setup 3–3
PTX_END The end command for the PTX_SETUP. When the
PTX_END command is detected, any unprintable
characters following it will be ignored. Therefore, the
next printable character from the host will be sent to
the active emulation.
Comments The PTX_Setup feature will only manage those options that are common
between printer emulations. Each emulation is responsible for providing
host commands to set emulation–specific options. If input data is invalid or
causes an error, the PTX_Setup parsing is terminated and the next character
is passed to the active emulation.