Legiondude said:
Except 343 can't reference Marathon as it's Bungie IP, which is why they removed the marathon logo from Guilty Spark's lightbulb in the Anniversary edition
Not exactly, since Bungie holds the copyrights to Marathon 343i can't include any material from Marathon (at least not until the copyright expires in about a century because copyright laws are currently retarded). This would be things like characters, specific weapons, large portions of dialog, and most relevantly the game's symbol.
Apparently this didn't apply to Halo CEA's classic mode since Spark's Marathon logo eye and the giant Marathon logo airlocks on the
Pillar of Autumn are still there. Maybe they don't count because they're assets in a game Microsoft owns. Although MS owns Halo 3: ODST yet Bungie claims to own the Superintendent symbols which is why they can sell Superintendent branded merchandise at the Bungie Store. Yet the Superintendent logo appears in Breakneck, a map for Halo: Reach made by Certain Affinity working with 343i without Bungie involvement. Furthermore ...
The point is copyright law is complicated and 343i can make all the references to Marathon they want as long as they don't lift material directly from the game. The terminals are a reference in that Marathon's primary story-telling mechanism was the terminals scattered throughout the game and this is fairly unique in the gaming world.