Difference of BARON solver option

GAMS
1

What is the different between these two BARON solver options:

Absolute Constraint Feasibility Tolerance (AbsConFeasTol) and Relative Constraints Feasibility Tolerance (RelConFeasTol)?

2

Same as between GAMS optCA and optCR:

https://www.gams.com/latest/docs/UG_GamsCall.html#GAMSAOoptca
https://www.gams.com/latest/docs/UG_GamsCall.html#GAMSAOoptcr

-Michael