## If Directive
The `l-if` directive supports the conditional display of content. It can be added to any html element. If its value
is `true`, the element and child nodes are displayed. Otherwise, they are not.
Try deleting the line `exposed = true`. Nothing should display.
Try adding `hiding = true` to the mount function in the script block. "I am hiding" should display.
Try changing `l-if="${hiding}"` to `l-if="${!hiding}"`. Nothing should display.