Before there were retroreflective coatings on road signs, some places used retroreflective dots to trace the letters and shapes.
Before there were retroreflective coatings on road signs, some places used retroreflective dots to trace the letters and shapes.
Nice and not US-specific. However, our railways use it sometimes to highlight black text for some reason.
Edit: Added topic to talk page!
For some reason my lemmy client, Thunder, can’t display that image from Wikipedia, but the URL is correct. I can open it in a browser.
Reuploading it to Lemmy in case others have the same issue.
This may be because the URL contains non-ASCII, which I haven’t percent-encoded, despite having manually changed
(and)to%28and%29to prevent the parentheses from interfering with Markdown syntax.That could be it. Incidentally, the image displays fine in the web UI. Must be a bug in Thunder.