Once written, the descriptions are added to a website's HTML, making images easier ... so making your alt-text descriptions as close to how you would normally read and write will help users ...

With Markdown, writing HTML-formatted documents is as easy as writing plain text. Software developers use it, but so do many ...

HTML doesn't offer as clean a solution for vertical lines as it does for horizontal lines -- a vertical equivalent to the Set your image up within your text and add a "style" attribute tag.