Sets the current cursor texture.
changed = SetCursor(cursor)
- string - cursor to switch to; either a built-in cursor identifier (like "ATTACK_CURSOR"), path to a cursor texture (e.g. "Interface/Cursor/Taxi"), or nil to reset to a default cursor.
- boolean - always 1.
- If the cursor is hovering over WorldFrame, the SetCursor function will have no effect - cursor is locked to reflect what the player is currently pointing at.
- Texture paths may be suffixed by ".crosshair" to offset the position of the texture such that it will be centered on the cursor.
- If called with an invalid argument, the cursor is replaced by a black square.