anchor.diff:  
         section
           h1#definitions Definitions
  +        h2#quantities Quantities
           table.c-quantity-table
             thead
               tr
  
positive.code:               td Relative density
                td
  
  
  
        include ../inc/aerodynamic-terms.jade
  
negative.code:               td Relative temperature
                td
              tr
                td: var &Lambda;
                td Wing sweep
                td
              tr
                td: var &lambda;
                td Taper Ratio
                td
              tr
                td: var &rho;
                td Density
                td kg m#[sup &minus;3]
  