{{subst:Template:Tlsu}}
Essentially the same as {{Tls}} for templates, but {{Tlsu}} is for any page like {{Tlu}}.
{{Tls}}
{{Tlsu}}
{{Tlu}}
Example: {{Tlsu|User:Zondor/Toolboxes}} gives Template:Tls2.
{{Tlsu|User:Zondor/Toolboxes}}