Codes in texts

To make codes visible in texts, you need to apply the 'Nowiki' button in the standard editing toolbar that shows at the top of each page in edit mode. The button looks like this:

When you use this button, the code that you entered will be shown as text, and will not work as a code, for example:

<nowiki>[[This would normally show as an internal link]]</nowiki>

To make texts appear in a frame with a grey background, you start the line with a space. For example, this same sentence would look like this:

To make texts appear in a frame with a grey background, you start the line with a space.

Another way to do it is to use: <code>Coded text</code>

Looks like:
Coded text