title: Add font to R that is not in extrafonts library
body: <p>After installing R's extrafonts library, and checking what fonts it had to offer, it came up with this list:</p>
  
  <pre><code>[1] ".Keyboard"               "System Font"             "Andale Mono"             "Apple Braille"           "AppleMyungjo"           
  [6] "Arial Black"             "Arial"                   "Arial Narrow"            "Arial Rounded MT Bold"   "Arial Unicode MS"       
  [11] "Batang"                  "Bodoni Ornaments"        "Bodoni 72 Smallcaps"     "Bookshelf Symbol 7"      ""                       
  [16] "Brush Script MT"         "Calibri"                 "Calibri Light"           "Cambria"                 "Cambria Math"           
  [21] "Candara"                 "Comic Sans MS"           "Consolas"                "Constantia"              "Corbel"                 
  [26] "Courier New"             "DIN Alternate"           "DIN Condensed"           "Franklin Gothic Book"    "Franklin Gothic Medium" 
  [31] "Gabriola"                "Georgia"                 "Gill Sans MT"            "Gulim"                   "Impact"                 
  [36] "Khmer Sangam MN"         "Lao Sangam MN"           "Lucida Console"          "Lucida Sans Unicode"     "Luminari"               
  [41] "Marlett"                 "Meiryo"                  "Microsoft Yi Baiti"      "Microsoft Himalaya"      "Microsoft Sans Serif"   
  [46] "Microsoft Tai Le"        "MingLiU_HKSCS-ExtB"      "MingLiU_HKSCS"           "MingLiU"                 "MingLiU-ExtB"           
  [51] "Mongolian Baiti"         "MS Gothic"               "MS Mincho"               "MS PGothic"              "MS PMincho"             
  [56] "MS Reference Sans Serif" "MS Reference Specialty"  "Palatino Linotype"       "Perpetua"                "PMingLiU"               
  [61] "PMingLiU-ExtB"           "SimHei"                  "SimSun"                  "SimSun-ExtB"             "Tahoma"                 
  [66] "Times New Roman"         "Trattatello"             "Trebuchet MS"            "Tw Cen MT"               "Verdana"                
  [71] "Webdings"                "Wingdings"               "Wingdings 2"             "Wingdings 3"    
  </code></pre>
  
  <p>However I need to use National 2 Condensed, and National (<a href="https://klim.co.nz/retail-fonts/national-2-condensed/" rel="noreferrer">https://klim.co.nz/retail-fonts/national-2-condensed/</a>).</p>
  
  <p>Is there a way to download these custom fonts for R to use in ggplot, even though they aren't included in extrafonts? <strong>And if not</strong>, does anybody know if any of these fonts are particularly similar to National 2 Condensed and National 2?</p>