{{[[Template:{{{1}}}|{{{1}}}]]}}
{{tl|templatename}}
{{tl|OS}} gives:
{{tl|OS}}
{{OS}}
Parameters can also be added, to a maximum of 4.
{{tl|move|Page to move to|Optional reason}} gives:
{{tl|move|Page to move to|Optional reason}}
{{move|Page to move to|Optional reason}}