The documentation of the -width -and -height options in the pnmtops man page in
the netpbm-progs package claims, "The page size has no effect, however, when you
specify the -imagewidth, -imageheight, or -equalpixels options."  I've
determined empirically that this simply isn't true.  If I give pnmtops a 600dpi
PBM which is 8" by 13" and specify "-dpi 600 -equalpixels -noturn -rle", it cuts
the bitmap off at 11" in height.  If, however, I run the same command with
"-height 14", it prints the whole thing (I'm using legal paper, obviously).  The
program's behavior is probably correct; it's just that the man page needs to be
fixed.