new serial number field in transaction table and index table and exposed to views. Improved internal API for saving, deleting, supplementing transactions and validating, handles several transactions at once. Improved separation of transaction entity from transaction forms, and reworking of the form handling in forms module. New mcapi_auto module has simple actions and triggers working to create dependent transactions. Updating transactions is no longer possible, through there are three modes for undoing transactions. Dependent transactions (sharing a serial number) are viewed at the bottom of the transaction certificate transaction_load($serial) returns the transaction and its dependents. Improved permissions for currencies / transactions. 2nd step of transaction forms recoded. Reworked transaction link field for views. UPGRADERS MUST RESAVE ALL CURRENCIES AND FORMS, REINSTALL MCAPI INDEX MODULE AND RUN UPDATE.PHP