My Web-related notes
        - Browser allowance for cross-origin inclusion of style sheet.
            : see https://en.wikipedia.org/wiki/Cross-origin_resource_sharing : ‘A web page may freely embed
          cross-origin images, stylesheets, scripts, iframes, and videos.’
            - A style sheet is considered an *embedded resource*.
                : re `embedded resource` see @ non-fractal
              https://developer.mozilla.org/en-US/docs/Web/Security/Same-origin_policy
        - Hypertext Transfer Protocol (HTTP) status codes.
            : see https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
            - 2-- Successful response.
          3-- Redirection, except 304 means "not modified"
          4-- Request error, caused by client
          5-- Service error, caused by server
        ━━━━━━━━━━━━━━━━━━━━━━━━━━
     Markdown compatible HTML
    ──────────────────────────
            - The markdown form of project files `README.html`.
            - There the HTML is Markdown compatible only for sake of the Git Hub adaptor link (`README.md`)
          which is a sibling and effective alias of each `README.html`.
                / For an example of these files
                    : see https://github.com/Michael-Allan/Java_Mode_Tamed
            a local Markdown compiler, previewing with
                Emacs >+ M-x gfm-mode
                    / Emacs major mode for Git Hub Markdown.
                    : see http://jblevins.org/projects/markdown-mode/
                Emacs >+ C-c C-c p
                    - It opens the preview in a new Chrome (or Firefox) tab.
                        / Not sure why browser sometimes varies, maybe whichever was last built.
            Git Hub’s Markdown compiler, previewing with
                + Open direct editor.
                + Paste content.
                    / Copying from Emacs.
                + Commit.
                + View.
                + Overwrite with a routine mirror push.
                    : privately see /usr/local/bin/sync-web