The map is sealed with a big box (
always bad) and when reading what editor that has been used, I understand why.
If you want to map for Q1, I suggest that you stay away from Qoole. It's an extremely bad editor and will cause you major grief.
Better editors are BSP, WorldCraft or QuArK. You can even use non-Q1 editors like Hammer or GtkRadiant, but then you'll need conversion tools as well.
Also, if you want your minlight to work, you'll have to switch compile tools. Take a look at
http://user.tninet.se/~xir870k and
http://www.planetquake.com/tyrann .