Humane syntax for specifying any spec icon. Pass the spec name and, optionally, class name (to differentiate between spec names shared by multiple classes), template returns in-line icon. See discusión for spec abbreviations and other documentation.

{{SpecIcon|<Spec Name>|<Class Name>}}

{{SpecIcon|<Holy>|<Paladin>}}: Holy (Paladin is specified because priests have a Holy spec too)
{{SpecIcon|<Shadow>}}: Shadow (no such conflict with Shadow)
{{SpecIcon|<Hybrid>}}: Hybrid (Hybrid uses the same icon for all classes)
{{SpecIcon}}: No Spec (Passing "none" would result in the same icon)