title: git graph what do the lines and asteriks denote?
body: <p>Trying to understand git in a bit more detail. In the graph output of git log, what do the lines and dots mean? Why are the dots only on the left for part of it, and only on the right for another part? Is it because I ran the command from a specific branch? Would it be different form master? Is a pull merge shown differently?</p>
  
  <p><img src="https://i.stack.imgur.com/h0M5k.png" alt="enter image description here"></p>