title: Displaying Annotation text at the top of the graph in Google Charts
body: <p>I currently have a line chart that I've created in Google charts and have a question that I can't seem to find in the docs. Attached is a picture of what I need, but in text:</p>
  <p>I need to be able to annotate specific values along the x-axis with a vertical line, but instead of having the text labels rotated to be perpendicular to the x-axis (see: <a href="https://stackoverflow.com/questions/52891016/how-can-i-add-a-vertical-line-on-the-x-axis-in-a-google-chart-chart-line-type">How can I add a vertical line on the X axis in a Google Chart&#39; chart (Line type)?</a>), I need the text to be above the vertical line at the top of the graph, parallel to the x-axis.</p>
  <p>Here is a drawn image of what I'm looking for:</p>
  <p><a href="https://i.stack.imgur.com/7ykik.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7ykik.png" alt="Graph that I need" /></a></p>
  <p>I was thinking maybe doing this with annotations, but open to any ideas.</p>