Gweld cod Nodyn:Get regnum()

<includeonly><!-- each line returns a null string UNLESS it's a regnum.  Since only one level will be a regnum, the final output will be the name of that regnum.
                -->{{is reg()|{{{1}}}  }}<!--
         -->{{is reg()|{{t^|{{{1}}} }} }}<!--
        -->{{is reg()|{{t^^|{{{1}}} }} }}<!--
-->{{is reg()|{{t^|{{t^^|{{{1}}} }} }} }}<!--
                 -->{{is reg()|{{t^4|{{{1}}} }} }}<!--
         -->{{is reg()|{{t^4|{{t^|{{{1}}} }} }} }}<!--
        -->{{is reg()|{{t^4|{{t^^|{{{1}}} }} }} }}<!--
-->{{is reg()|{{t^4|{{t^^|{{t^|{{{1}}} }} }} }} }}<!--
                 -->{{is reg()|{{t^4|{{t^4|{{{1}}} }} }} }}<!--
         -->{{is reg()|{{t^4|{{t^4|{{t^|{{{1}}} }} }} }} }}<!--
        -->{{is reg()|{{t^4|{{t^4|{{t^^|{{{1}}} }} }} }} }}<!--
-->{{is reg()|{{t^4|{{t^4|{{t^^|{{t^|{{{1}}} }} }} }} }} }}<!--
                 -->{{is reg()|{{t^4|{{t^4|{{t^4|{{{1}}} }} }} }} }}<!--
         -->{{is reg()|{{t^4|{{t^4|{{t^4|{{t^|{{{1}}} }} }} }} }} }}<!--
        -->{{is reg()|{{t^4|{{t^4|{{t^4|{{t^^|{{{1}}} }} }} }} }} }}<!--
-->{{is reg()|{{t^4|{{t^4|{{t^4|{{t^^|{{t^|{{{1}}} }} }} }} }} }} }}<!--
                 -->{{is reg()|{{t^16|{{{1}}} }} }}<!--
We can't continue this game indefinitely; there's a 40-deep limit on nested templates.
We can avoid this by sneakily calling copies of this template:
(We can't call the template itself; that'd create a loop.)
Whilst we could squeeze a couple more rows in this template, we want to allow it to be used within other templates, so it's worth leaving some wriggle room.
-->{{get regnum()/1|{{t^16|{{t^|{{{1}}} }} }} }}<!--
This template itself calls a deeper copy, so we can search for a regnum up to sixty levels above the input taxon.
--></includeonly><noinclude>{{documentation}}</noinclude>