Also even just within JIRA it can be inconsistent - I realised that to make monospaced text you need to use:

- backticks when creating a Jira ticket, e.g. `hello`

- double curly-braces when editing a Jira ticket, e.g. {{hello}}

... or vice versa. I cannot honestly remember which way round it is. Of the complaints I have about Jira this is probably the least annoying - but it really shows how irritating the product is.