3d NMR data processing on vnmr

Q-1. Could you pls suggest me that default or reference Linear Prediction parameters of following to enter to process 3d nmr in t1 t2 i need to enter following parameters on vnmrj
coef -
basic pts -
starting at -
predicted pts -
starting at -

while iam processing data it giving error messasge as value for Strtlp is too small

Q-2. weighting functions which can we prefer more frquntely to process 3d nmr on VNMRJ ?

Q-3 . When we use sinebell shift value and what is default value ?

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