Example: To create a spike trap coming from out of a southern sloping ceiling while Lara is facing west, enter OCB 9. Correspondingly, to make a spike trap come from out of a northern sloping floor while Lara is facing west, enter OCB 13.
Constantly Extended Spikes
For constantly extended spikes, additionally set bit 5 (add 16 to the codes above).
Once Extending Spikes
For spikes that extend once and then never again, additionally set bit 6 (add 32 to the codes above).