Syntax

edit
{{User:Cuckooman4/UBX/Pi
  |A number, or a phrase that fits the sentence
}}

Source

edit
{{Userbox
  |id       = [[Image:Pi-symbol.svg|40px]]
  |id-c     = #FFFFFF
  |info     = This user knows {{{1|none of the}}} digits of [[pi|<span style="color:#FFFFFF;">pi</span>]].
  |info-c   = #039
  |info-fc  = #FFFFFF
  |border-c = #000000
}}