class output_line :?sp:ULine.separator -> UChar.t #OOChannel.obj_output_channel ->[text]OOChannel.obj_output_channel
new output_line ~sp output_obj create the new output channel object
OOChannel.obj_output_channel which output each line to output_obj
using sp as a line separator.
If sp is omitted, linefeed (LF) is used.