[R] Symbols in pdf output of flextable() via R markdown

[Paul Sherliker]

>Finally, you could use as_equation from flextable,
>which avoids the cumbersome `as_chunk("c", props = ...` at all:
>as_equation("[file://\\chi^2]\\chi^2")
>
>Best Eik

Thank you!  With as_equation("\\chi^2"), this got me what I need.  (I needed to install equatags.)

                                      Paul