Is %i an integer?



Dear list,

integrate(exp(-x^%i),x,0,1);

yields a question about whether %i is an integer. Is there more than
one interpretation of %i in Maxima?

(I don't have a problem with the answer at the end after 'yes' or 'no'
- limits of incomplete gamma functions makes sense.)

Thank you for your help.  Sorry for the deluge of questions - I have
quite a backlog I've accumulated, and certainly some are going to be
very naive, I'm afraid.