santamaria, I use VT-100 commands for terminal control. If you do a search for VT-100 commands you will find quite a list. Here are some control codes I have used in the past to control ternimals connected to my products:
' ************************************************** ********
INITS: 'INITIALIZE TERMINAL

CLRS:
SEROUT2 TX1,TX1BAUD,[27,91,72] 'HOME CURSOR
SEROUT2 TX1,TX1BAUD,[27,"[1J"] 'CLEAR SCREEN
RETURN

************************************************** ********
POSITION: 'POSITION CURSOR ON LINE & COLLUM
SEROUT2 TX1,TX1BAUD,[27,91,"H"]
SEROUT2 TX1,TX1BAUD,[27,91,DEC LINE,";",DEC COLLUM,"f"]
RETURN

Dave Purola,
N8NTA