The Fl_Help_View class !

Fl_Register_Images()
dim as Fl_Window ptr win = Fl_WindowNew(640,480,"Fl_Help_View01")
dim as Fl_Help_View ptr hv = Fl_Help_ViewNew(10,10,620,460)
Fl_Help_ViewSetValue hv, html
Fl_GroupSetResizable win,hv
Fl_WindowShow win
Fl_Run

test02.html