Oxygen XML Editor Author displays the element name as pseudo-content for empty elements,
if the Show placeholders for empty elements option is
enabled and there is no before or after content set in CSS for this type of element.
To control the displayed pseudo-content for empty elements, you can use the
-oxy-placeholder-content CSS property.
The
-oxy-show-placeholder property allows you to decide whether the
placeholder must be shown. The possible values are:
- always - Always display placeholders.
- default - Always display placeholders if before or after content are
not set is CSS.
- inherit - The placeholders are displayed according to Show
placeholders for empty elements option (if before and
after content is not declared).
Note: Deprecated properties show-placeholder and
placeholder-content are also supported.