Yes, binmode does help me in reading the characters as they are. But I'm not sure as to how many bytes I should read at a time. Since PCL files are not regular ASCII files and they are not delimited on "\n", reading them one line at a time is not a simple thing unless I know the line delimiter.

I've been trying to find the line and page delimiter from those characters in the file and using PCL command reference, but I couldn't succeed.

I figured all the commands begin with ESC control code.

In reply to Re^2: How to edit a PCL file by GoForIt
in thread How to edit a PCL file by GoForIt

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