One Object, Many Files
Until recently, an object in EO was whatever a single .eo file said it was.
If you wanted number to know how to raise itself to a power,
you either grew number.eo until nobody could read it,
or you parked the operation in some other object with a made-up name.
We took a third road:
an object and the package named after it are now the same thing,
so number is defined by number.eo and by every file under number/.