Writing The 'access_data_first' Macro

• We define the macro using the 'define' block:

  define access_data_first
          set $ad_curr = g_access_list_head
          if $ad_curr == 0
                  print "(null)"
          else
                  print *(struct access_data*)$ad_curr->data
          end
  end

• We document the macro using the 'document' block:

  document access_data_first
          prints the first node in the global access_data list, or "(null)"
  end

Originally written by guy keren