Sentence:  That it was lawful and meritorious to kill and destroy the king, and all the said hereticks. — The <WSD>mean</WSD> to effect it, they concluded to be, that, 1. The king, the queen, the prince, the lords spiritual and temporal, the knights and burgoses of the parliament, should be blown up with powder. 2. That the whole royal issue male should be destroyed. S. That they would lake into their custody Elizabeth and Mary the king's daughters, and proclaim the lady Elizabeth queen. 4. That they should feign a Proclamation in the name of Elizabeth, in which no mention should be made of alteration of religion, nor that they were parties to the treason, until they had raised power to perform the same; and then to proclaim, all grievances in the kingdom should be reformed. 
Meaning of the word marked with <WSD> tags:  An intermediate step or intermediate steps.