Display Tag Markers

Oxygen Author allows you to choose whether tag markers of an element should never be presented or the current display mode should be respected. This is especially useful when working with :before and :after pseudo-elements in which case the element range is already visually defined so the tag markers are redundant.

The property is named display-tags. Its possible values are :
display-tags
    Value: none | default | inherit
    Initial: default
    Applies to: all nodes(comments, elements, CDATA, etc)
    Inherited: false
    Media: all 

Docbook Para elements

In this example the para element from Docbook is using an :before and :after element so you don't want its tag markers to be visible.

para:before{
    content: "{";
}

para:after{
    content: "}";
}

para{
    display-tags: none;
    display:block;
    margin: 0.5em 0;
}