How to interpret the impulse diagram?

how to interpret the diagram shown below?
model;
c^(-sigma)=beta*(c(+1)^(-sigma)(alphaa(+1)k^(alpha-1)+(1-
delta)));
y = a
k(-1)^(alpha);
k = i + (1-delta)k(-1);
y = c + i;
log(a) = rho
log(a(-1))+ e;
end;

See e.g. Chapter_4.pdf (209.0 KB)

can you send me the complete version?