Template talk:T chart
Documentation
This template makes a T-chart with up to 6 rows (besides the header). The first row is mandatory, as is the left column of each row that's present.
{{T chart |left_heading=Fruit |
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Some of the coding for the template gets funky because you can't mix parser functions like {{#if:}} with vertical bars needed to separate table elements. So anywhere we have {{!}} is a place where we cannot have a vertical bar (but need one).
Might be able to make a row show up if either Ln or Rn are present by doing something like this:
{{#ifexpr: {{#len:{{{L2}}}}}|{{#len:{{{R2}}}}}|code for including the row|}}