One thing about Git and GitHub that has had me puzzled was how to connect RStudio to two different GitHub accounts, my personal account and the Open-Meta account. My Google searches were turning up nothing on this.
Git is software that keeps close track of the changes you make to your work. The folks who wrote Linux designed and developed Git; group work on a software project is pretty much impossible without something like this.
In the last paragraph of my And how… post I mentioned using iframes to display something from another web site embedded inside this one. Here’s a sample of what this might look like, although in actual use you’d hide the red border. Here I display it so we can see the dimensions of the iframe and where it’s positioned on the page.