To create a resource definition using the command line:
CEDA DEFINE TRANSACTION(BBB1) PROGRAM(CCC1)
When you press Enter, the new transaction BBB1 is defined. Note that it has been defined without an associated group name; this is because, as long as you are within the same CEDA session, the current group (that is, the one you have most recently been working with) is used by default. If you had used PF3 before this, your CEDA session would have ended, so there would be no current group name for CEDA to assume.