Code snippets can be displayed on any chapter page by using the "Code" option from the style dropdown.
# Here is an example block of code using the "Code" style.
var x = 1;
To add new lines to the same block of code, hold down Shift while pressing enter to do a soft line break.
Currently, displaying HTML (or any language that uses brackets < >) is not fully supported.
Inline codes like this can also be used by choosing the "Code (Inline)" option from the style dropdown.