Kind ask about readMS result

[QBS024]

Dear professor,
Thanks for developing PopGenome which is the most useful package for me.
If I have MSMS simulation result which is stored in txt file and use 'readMS' to read it,

could you please tell me how can I extract that positions (0-1 scale) of each replicate of MSMS in GENOME.class?
Thank you for your help and time.