class read_in_record_channel :Provides anrepr:text_data_repr -> Netchannels.in_obj_channel ->in_record_channel
in_record_channel that takes newline characters as
EOR representation.
In this implementation, input_line can be used to read the full
contents of a record (=line). However, input_line does not
switch to the next record.
repr : Determines the newline character to use