Several options may be set in the MIF 3.00 driver.
Syntax:
set terminal mif {color | colour | monochrome} {polyline | vectors} {help | ?}
colour plots lines with line types 5#5= 0 in colour (MIF sep. 2–7) and monochrome plots all line types in black (MIF sep. 0). polyline plots curves as continuous curves and vectors plots curves as collections of vectors. help and ? print online help on standard error output — both print a short description of the usage; help also lists the options.
Examples:
set term mif colour polylines # defaults set term mif # defaults set term mif vectors set term mif help