The Logic Off Topic list

Hi folks,
This may be an obvious question to some, but it's not that obvious to 
me. The question is as follows:
I've got an old Kawai K4 synth with some cheasy and some great 
sounds, :-). Now for some reason, which I don't understand, the 
programmers have included some sine waves into the set of wavetables.
With wavetables I mean samples of one or two cycles. There are 9 sine 
waves included, starting with a basic one and the subsequent ones are 
an octave, a quint above that, a quart above that one, a perfect 
third, a dimished third, another diminished third, a second and 
another second.
Now, they sound like they are just transposed, if you listen to them; 
at C7 they alias like hell, :-)(cool effects, btw). What confuses me 
is, why would they include these, when there is a option to transpose 
the waves from -24 to +24, meaning that an octave is 12 steps? It 
would be a waste of ROM I would say. Or is it about 'equal 
temparature' that they've included these, given the fact that these 
waves are not multisampled?
You can make nice organ sounds with these sines, especially when you 
can combine four of these on the K4.

Synth programming tip for the day: Try beefing up the sound of a 
sawtooth wave with a sine wave, while keeping the amplitude of the 
sine at 75% of the sawtooth wave. It can make the sound of a simple 
saw wave sound 'thick', ;-).
Yoonchi.