In my last two postings, I introduced a way to create slide presentations by writing them in a simple text file, with Markdown formatting, and add some of the “infinite canvas” features of Impress.js.

You have all of these digital photos stashed away in the corners of your hard drive. They’d make a lovely gift or year-end memento. You could print them out and slide them into a photo album—but ...

In this age of helicopter parenting, childproof everything, and lawsuits galore, you don’t see many handmade slides in public parks. And yet here we have an example in the heart of San José. The ...