Issue on page /PDI.html

[abrudz]

You need to read the first three lines and the last three lines separately.

Instead, split into two code blocks.

Now you can see

that the first a is labeled

"a" should be "`a`" (code).

?S

Needs a space

Maybe a note about ability to see this as a video at https://dyalog.tv/Webinar/?v=6SAsgEvUmkU