Mostly a note to myself.
In HIP, the Horizon OPAC, sometimes when you edit XSL, it is immediately picked up automatically. Other times, in other files, it is not.
Previously, I thought that the only way to get it picked up was to restart the ‘xsl’ and ‘hzapp’ processes, which results in some HIP downtime. (Several minutes in my installation).
But once when I was looking at the URLs generated by the HIP admin console, I noticed something. If you include &reloadxsl=true in your HIP URL, you force HIP to reload all XSL, without a restart, and with no downtime. Very useful.