lineart is solid black and white work, meaning that if you were to save the file as a .tif format file with lzw compression (100% lossless compression btw, ingenious stuff),` expect your file size to drop to a few megs at most. One of my old works, The Grudge, was a 550+ meg photoshop file (this included all the layer information, but it really was a massive file) and it shrunk to about 40 megs with tif and lzw. A more recent thing of mine, Val and AI (in the 2D forum) is a 30 meg or so tif file without lzw (Expresion doesn't give the option for LZW compression when exporting). Reopen in photoshop and resave with lzw, and the same file is now a paltry 1.89 megs. for info on what LZW actually is, I've gone over it a few times in photoshop and 2D Graphics forums i believe, just do a search.