[modeller_usage] How analyse "model_segment"

[li bai <>]

Dear,

everyone! Could you tell how analyse like:

model_segment=('FIRST:A','LAST:A')

model_segment=('FIRST:@,'END:')

model_segment=('2','50')

model_segment=('!2','!50')

Could give me an answer?

Thank you very much!

                                                                                                 

 Sincerely!   

   Yours,       

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