Any stock or exchange-traded fund ("ETF") whose present risk exposure exceeds its reward prospect will be above the dotted diagonal line.

Source: https://seekingalpha.com/article/4567823-casella-waste-now-best-prospect-among-government-services-stocks?source=feed_all_articles

If I decide to take an airplane from Korea to the UK, then my movement will be drawn as a diagonal line on the graph since I have moved in both space and time.

Source: http://heraldk.com/en/2023/06/01/the-past-present-and-future-of-archaeology/

MacKenzie confirmed that in January 2021 he drew a diagonal line on his cell phone from Alaska, through Alberta and Saskatchewan, through the Dakotas, down to Texas and across to Florida and named it Diagolon.

Source: https://dissidentvoice.org/2023/07/coutts-four-denied-bail-in-prison-in-canada-for-over-500-days-without-trial-are-they-political-prisoners/