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Message: [QUOTE="robic, post: 4787174"] The "while( wait_for_level2_io )" condition is the "<>" mode default. Perl submits a default Level 2 io read request, then waits for the io device to deliver a complete entry, which could include more than one "\n" depending on if the callers process was slowed down. Perl would return on the last EOL char it gets (there could be several) OR the EOF condition. Thats why /\n+/ is relavent. Printing a string with several \n I guess you wouldn't be able to tell. Might have to run an assembly program that pumps multiple \n at high priority to tell for sure. [/QUOTE]