Hi Ravinder,
The (crlf) (and in two places) crlf (without the parentheses) is FredAtArrow's notation indicating that the input and output lines have Windows style <carriage-return><line-feed> (where <line-feed> is a synonym for <newline> on Linux/UNIX systems) line terminators instead of just the Linux/UNIX style <newline> line terminators. The:

Code:

gsub(/[\r\n]/, "")

that processed every input line in Corona688's proposal is overkill removing both <carriage-return>s and <newline>s (I say overkill, because awk already strips out the <newline> characters before it hands us a line as long as we keep the default value for the awk RS variable).

The code I suggested strips out the carriage returns (the awk escape sequence \r in a string) from the accumulated set of three input lines just before adding back the desired <carriage-return> at the end of the line when printing the results:

Code:

		gsub("\r", "", out)
		print out "\r"

and, as we both know, as long as we are using the default awk ORS variable, the print command adds a <newline> when it prints a string.