Assume that the answer to the continue fitting question is no.
XSPEC> query no
The continue fitting question in fit, steppar, and error will not
be asked when the number of trials is exceeded. Also, when the number of
trials to find the error is exceeded, a question will not be asked. In
both cases the program will behave as if a no answer was given to the
question, that is, it will stop and return to the XSPEC prompt.