-1.000000
enables you to set a maximum allowed deviation between the original and the resulting surfaces during the conversion of creo
elements/pro surfaces to spline surfaces. for example, for iges this conversion occurs only when the iges_out_all_srfs_asoption is set to 114. for catia and vda, this conversion always occurs.
setting the maximum deviation enables you to convert surfaces with a better approximation than by using the current accuracy
of the model.
specify a positive value in the current model units to set the deviation. if the value that you specify is outside the accepted
range, the system uses the default model accuracy.