Translating very old macros to Metview 4

Original code:

cont = pcont( contour_lo_colour : "blue" )
coast = pcoast( map_coastline_colour : "background" )

win = plotwindow( row : 1,
     column : 1,
     width : 1000,
     height : 888,
     pane_organization : "independent",
     subpage_map_projection : "polar_stereographic",
     subpage_map_hemisphere : "north",
     subpage_map_vertical_longitude : vert_long,
     area : [la1,lo1,la2,lo2],
     background : coast
)

Translated code:

cont = mcont( contour_hilo : "on",
     contour_lo_colour : "blue" )

coast = mcoast( map_coastline_colour : "black" )

polar_view = geoview( map_projection : "polar_stereographic",
     map_hemisphere : "north",
     map_vertical_longitude : vert_long,
     map_area_definition : "corners",
     area : [la1,lo1,la2,lo2],
     coastlines : coast
)

page = plot_page( view : polar_view )

win = plot_superpage( pages : [ page ] )