In the classic Reader page, cross-document links feature an eye icon. It is possible to have the same styling in designed Reader pages by adding the following code snippet to the portal's Content styles:
.ft-internal-xlink:after {
font-style: normal;
font-weight: normal;
font-variant: normal;
text-transform: none;
speak: none;
line-height: 1;
text-shadow: 1px 1px 1px rgba(0,0,0,.004);
text-rendering: auto;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
font-family: "ft-icons";
content: "\f06e";
display: inline-block;
margin-left: .2em;
}
The previous example uses the EYE icon, or f06e, which is a Fluid Topics icon.