Merry Christmas, you happy wadders, you...

    // Call P_SpecialThing when touched.
    MF_SPECIAL          = 0x0001,
    // Blocks.
    MF_SOLID            = 0x0002,
    // Can be hit.
    MF_SHOOTABLE        = 0x0004,
    // Don't use the sector links (invisible but touchable).
    MF_NOSECTOR         = 0x0008,
    // Don't use the blocklinks (inert but displayable)
    MF_NOBLOCKMAP       = 0x0010,

    // Not to be activated by sound, deaf monster.
    MF_AMBUSH           = 0x0020,
    // You can push this object. It can activate switches and things by pushing it on top.
    MF_PUSHABLE          = 0x0040,
    // Object is a boss.
    MF_BOSS     = 0x0080,
    // On level spawning (initial position),
    //  hang from ceiling instead of stand on floor.
    MF_SPAWNCEILING     = 0x0100,
    // Don't apply gravity (every tic),
    //  that is, object will float, keeping current height
    //  or changing it actively.
    MF_NOGRAVITY        = 0x0200,

    // This object is an ambient sound.
    MF_AMBIENT          = 0x0400,
    // Slide this object when it hits a wall. Tails 12-28-2003
    MF_SLIDEME          = 0x0800,
    // Player cheat. ???
    MF_NOCLIP           = 0x1000,
    // This object does not adhere to regular flag/z properties for object placing.
    MF_SPECIALFLAGS            = 0x2000,
    // Allow moves to any height, no gravity.
    // For active floaters, e.g. cacodemons, pain elementals.
    MF_FLOAT            = 0x4000,
    // Monitor powerup icon. These rise a bit.
    MF_MONITORICON      = 0x8000,
    // Don't hit same species, explode on block.
    // Player missiles as well as fireballs of various kinds.
    MF_MISSILE          = 0x10000,
    
	// Item is a spring.
    MF_SPRING          = 0x20000,

	// bounce off walls and things Graue 12-31-2003
	MF_BOUNCE           = 0x40000,

    // Object uses a high-resolution sprite
	// Tails 01-23-2003
    MF_HIRES          = 0x80000,

    // This object is an item box! Tails 01-08-2002
    MF_MONITOR           = 0x100000,
    // Floating to a height for a move, ???
    //  don't auto float to target's height.
    MF_INFLOAT          = 0x200000,

    // On kill, count this enemy object
    //  towards intermission kill total.
    // Happy gathering.
    MF_COUNTKILL        = 0x400000,

    // On picking up, count this item object
    //  towards intermission item total.
    MF_COUNTITEM        = 0x800000,

	// This mobj is an enemy! Tails 12-27-2003
	MF_ENEMY            = 0x1000000,

    // Use the scenery thinker instead if it is just scenery.
	// Tails 07-24-2002
    MF_SCENERY        = 0x2000000,

    // Player sprites in multiplayer modes are modified
    //  using an internal color lookup table for re-indexing.
    // If 0x4 0x8 or 0xc,
    //  use a translation table for player colormaps
    MF_TRANSLATION      = 0x3C000000,    // 0xc000000, original 4color

    // Hmm ???.
    MF_TRANSSHIFT       = 26,

    // for chase camera, don't be blocked by things (partial clipping)
    MF_NOCLIPTHING      = 0x40000000,

    MF_FIRE           = 0x80000000 // This is a fire object (doesn't harm if you have red shield).