{{koenig-basic-html-input
    html=caption
    placeholder=(if isFocused "" placeholder)
    class="miw-100 tc bn form-text bg-transparent"
    name="caption"
    onChange=(action update)
    onFocus=(action (mut isFocused) true)
    onBlur=(action (mut isFocused) false)
    onNewline=(action "handleEnter")
    didCreateEditor=(action "registerEditor")
}}