Tag

{{#switch:pair

|close
|single   = 
|open
|pair
|#default = <tag{{#if:| {{{params}}}}}>

}}{{#switch:pair

|open
|close
|single   = 
|pair
|#default = 

}}{{#switch:pair

|open
|single   = 
|close
|pair
|#default = </tag>

}}{{#switch:pair

|single   = <tag{{#if:| {{{params}}}}}/>

}}