What does 5.2.03 stand for in the X-Men movie?

5.2.03 is a code used in the X-Men movie *X2: X-Men United* to identify the "Weapon X" program. It appears on the door of the room where Logan (Wolverine) is kept in the Weapon X facility.

The specific meaning of the code is never explicitly stated in the movie, but it's likely a designation for the program itself or a specific project within it.

While the exact meaning is not clear, it serves as a reminder of the cruel and inhumane experiments that Logan endured as part of the Weapon X program.