READ-LINE READ-FILE RECURSE
READ-LINE ( str-adr str-len file -- count flag code )  
ansi 11.6.1.2090 <FILE>
fill the given string buffer with one line from the file. A line termination character (or character sequence under WIN/DOS) may also be placed in the buffer but is not included in the final count. In other respects this function performs a READ-FILE

reference: p4_read_line in ../src/file.c:0203, export CO READ-LINE