Place the 4 forked poles in their holes. Use the V-notch as you would the sight on a rifle to line up the fork of one pole with that of another. When those 2 are lined up, fill in their 2 holes with dirt, tamping the dirt down firmly every couple of shovel-fulls. You've now got the supports for one side finished. Next, perform the same operation on the other side, to complete the support-structure.
With the vertical poles in place, they can now perform their intended function: namely, to support the crosspieces, as illustrated on Page 8....
