To remove the symbol that denotes an external link from within your wiki. Just insert the following bit of CSS within the Custom CSS section in Control Panel.
a.external { background-image: none; padding: 0px; }
What does this do? When an external link is entered into the editor the anchor tag of the link is given a class of "external". So by inserting this custom CSS we are overriding the CSS which control the look and feel of all anchors with the class of external (a.external) to what we desire. By setting the background-image to none we are effectively removing the graphic symbol.
You can also control other aspects of the external links if you wanted to. For instance lets imagine that I actually wanted to denote external from internal links but not with the symbol. I could set the the text of external links to italic by entering the following.
a.external { background-image: none;
font-style: italic;
}
Which shuts off the image and turns the text of the link to italic.
As you can hopefully start to see this puts much of the power in your hands to make your wiki truly your own. Go ahead.. experiment, nearly any valid CSS should work.
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