Using a simple test it seems to load a default font, even if the font name is not found. Note that it is not blitz's default text font as you can see by commenting out the font load/set lines.
Stevie
Stevie
Open in online IDEGraphics 640,480,16,1 MyFont= LoadFont( "ThisFontDoesNotExist" ) SetFont MyFont SetBuffer BackBuffer() Text 0,10,MyFont Text 0,20,"This is just a test" Flip MouseWait