mastercoin-MSC/spec — pull request #292 by dexX7 (2014-12-05 17:43:23+00:00)
Title: Tx 21: refine sub-actions and the effect of "cancel-everything"

This commit refines the effects of the meta-dex sub-actions and adds further information about validity checks.

In particular the behavior of "cancel-everything" was not fully defined, because cross-ecosystem effects are usually not allowed.