V01.1 is out with (mostly) functional saving and loading.
Additionally, I have confirmed the presence of SCP-513 and SCP-789-J. The previously mentioned "Bll" is 513 and you can hear the bell being rung while he appears (it's in the game files as "Bell"). SCP-789-J can be found by approaching a toilet, at which point he will anounce his presence (or you can just listen to "BuGh" in the SFX folder). I've also found out that 106 stops chasing you after a very very long time and automatically starts chasing you when you go into the maintenance tunnels.
173 is surprisingly smart; several times he has ambushed me by standing just around a corner and waiting for me to approach. He apparently gets around the site by going through the vents and there are some rooms in which he will not spawn (the office, the first hallway, and the toilets) but he will go in through doors. If you run far enough away with enough door between you, 173 will eventually stop chasing you and slowly start to move away from you; this takes a very long time. He is also guaranteed to spawn in certain places, I was once saved from near death by entering a the hallway leading to the red gas room, in which he will automatically teleport into if this is the first time you encounter the room. He is also guarnteed to spawn at the end of the very first smoke hallway you encounter.
914, though a rare spawn, is incredibly useful and deadly. Putting a keycard through on "Very Fine" gives you an omni-level card. Putting the map device through "Very Fine" removes the need for batteries, extends the map shown, and indicates when 173 or 106 are in the area. Putting a report through on "Very Fine" produces origami, putting a report through on rough produces shredded paper. If you are fast enough, you can put yourself through the machine, "Fine" and "Very Fine" make you move a lot faster, but also cause heart attacks. A "Very Fine" battery has 9 megavolts and explodes.
895 currently is useless, possibly spawns 106, and only has one monitor that occasionally shows images (the images can be found in a specific folder in the GFX folder).