Loading From File

Hi, This is my Saving Function

Function FNT_Save()
	SaveFile = WriteFile("Level.txt")
	For Level.LevelAssets = Each LevelAssets 
		Level\xpos = EntityX(Level\BlockHandle)
		Level\zpos = EntityZ(Level\BlockHandle)
		Level\Rotation = EntityRoll(Level\BlockHandle)
		
		WriteInt( SaveFile, Level\xpos ) 
		WriteInt( SaveFile, Level\zpos ) 
		WriteInt( SaveFile, Level\Rotation) 

	Next
	CloseFile(SaveFile) 
End Function 

And seems to work (well it generates a file)

What would be the loading equivalent of this? how could I load the Type information back into an empty Type collection, and how does blitz know how many types are in the type collection?