Testing sandbox version edit

{{Self-reference/sandbox}}

Code
{{Self-seference/sandbox|This self-reference concerns [[Wikipedia]]}}
{{Self-reference/sandbox|This self-reference concerns [[Wikipedia]]|inline}}
Produces

This self-reference concerns Wikipedia

Testing main template edit

{{Self-reference}}

Code
{{Self-reference|This self-reference concerns [[Wikipedia]]}}
{{Self-reference|This self-reference concerns [[Wikipedia]]|inline}}
Produces