Secret Terminal in Halo Waypoint and how to get it

Just found out there is a secret terminal called the 'Threshold' terminal (Which i believe is the name of the Gas-Giant seen from Halo)

To unlock it you must

-Unlock all terminals in the campaign

-Write down the symbols which appear at the end of each one (Pictures of the symbols below)

-Start up Halo Waypoint

-Press button

-Press the buttons on your controller that correspond to coloured circles that appear on your screen

-Enter the 5 symbols from then end of a terminal

Do this for every terminal and you'll receive

-7,000cr per terminal (37,000 for the last one)

-The terminal to watch in Halo Waypoint

-The secret 'Threshold' terminal after entering the ten sets of 5 symbols