I just added two citation needed tags to this section the second and third sentences of the first paragraph and the entire last paragraph  I like how this section describes the differences between state diagrams and flowcharts  But the portions that I cited imply a negative connotation to combining states and flow graphs together and I would like to add a section to this page on how there are some alternative semantics where states and flow graph constructs can be used together in one single state diagram  However before I add my section I want to first check to see if there is indeed a citation available for these statements that imply that states and flow graphs should be separated from one another