predefined string with char and control chars

Hello,

I want to send this to the serial port:

myscreen1 CLRSCR,"Hello world",EOS // a constand string

myscreen2 CLRSCR,"Other text",EOS // a constand string

where:

CLRSCR = 0x12

EOS = 0xFF

in my program there are more than one screens but what is the beste way to implementate this (declaration and displaying). It should be possible to display 1 of the programmed screens.