  Using the superembedding approach, the full supersymmetric effective field
theory of the D9-brane, super Born-Infeld theory, is fixed by the so called
$\mathcal{F}$-constraint. The odd-odd components of the theory's super field
strength, $f_{\alpha \beta}$, are implied by this constraint. Given $f_{\alpha
\beta}$, the super Bianchi identities imply the theory's equations of motion.
We calculate $f_{\alpha \beta}$ up to order 5 in fields, corresponding to order
6 in fields in the Lagrangian.
