Clean Language for elaborating a Plan

And what needs to happen for MAIN_OBJ? (reply=ACT1)

And is there anything else that needs to happen for MAIN_OBJ? (ACT2, ACT3, …)

… repeat until 1st ‘no’ … (ACTn)

And ACT1, ACT2, ACT3, …, ACTn and is there anything else that needs to happen for MAIN_OBJ?

ACTn+1, ACTn+2 … repeat until 2nd ‘no’ … (ACTn+m)

And ACT1, ACT2, ACT3, …, ACTn+m and what needs to happen first? (ACT_PLAN)

And can ACT_PLAN?

If YES (a firm one!), wind up, else return to ‘And what needs to happen ..’.