<comment>** - Setting region to load</comment> `'set lon -20 40'` `'set lat 30 85'` <comment>** - Map projection</comment> `'set mpdset hires'` `'set mproj nps'` `'set mpvals -10 30 34 52'` <comment>** - Plotting relative humidity on 850 hPa</comment> `'set gxout shaded'` `'set lev 850'` `'d rhprs'` `'set gxout contour'` `'d rhprs'` <comment>** Labeling</comment> `'set string 3 l'` `'draw string 1 1 NCEP GFS 1 deg analysis: relative humidity 850hPa'`