This will flag the end of the current line with a left arrow character. When this line is written, the record separator will be replaced by a carriage return. As a result, when this line is printed, no linefeed will be issued and the following line will overstrike this line. This flag is automatically set when reading source lines which terminate in carriage returns rather than record separators. This allows reading and editing the output of DOC files which have underlining and/or boldfacing. (DOC is a document markup language which was used for the original QNX 2 manuals and which was also offered as a product by QNX Software Systems.)