Yeah, the LW had me a little confused too since I know you can't image vector as vector but this article cleared it up. The LW isn't really vector, it's just has a lot more resolution than the CT...
"Scitex LW/CT--The CT format is an uncompressed raster file that includes all of the original raster picture information assembled according to the final layout. The Linework file contains any information that was originally vector prior to rasterization and was rasterized at a higher resolution than the CT in order to maintain the necessary detail required for fonts, and other vector graphics. Since this raster file could be very large due to the resolutions used (typically in the 1800 dpi to 3500 dpi range), Scitex uses RLE compression to reduce the file size. In an effort to address a 248-color area limitation of the original LW format, Scitex developed NLW. This new format extends the available color areas to about 16,000, which allow for smooth LW blends and other value-added benefits."
It's really a great article, here's the link...
FILE FORMAT BINGO
This is a great topic BTW!
