I tested a file 1.3MB with 30447 lines and it took 3:24 minutes to parse without errors. The FM says that the whole file is put into memory.

filename=1300.txt
06:03:23
00 <-- this is the OPEN and then the CLOSE
06:06:47
30447 lines

cj

P.S. yes, I wrote a script that opens and reads every line of a file, recording the start and stop times and number of lines.

P.P.S. The 1.3MB text file is from Office 2000 and starts "REDISTRIBUTABLE CODE - Limited Use:"