How to add footnotes for the markdown table

[cderv]

Are you looking for a caption ?
https://pandoc.org/MANUAL.html#extension-pipe_tables

| Tables        | Are           | Cool  |
| ------------- |:-------------:| -----:|
| col 3 is      | right-aligned | $1600 |
| col 2 is      | centered      |   $12 |
| zebra stripes | are neat      |    $1 |

  : About the table

But Pandoc will put that above I think. See Pandoc Manual for supported Markdown syntax
https://pandoc.org/MANUAL.html#tables

Otherwise, you can use R packages to format table to your liking. Some of them have footnote for table support

• KableExtra:
  • For HTML https://cran.r-project.org/web/packages/kableExtra/vignettes/awesome_table_in_html.html#Table_Footnote
  • For PDF https://cran.r-project.org/web/packages/kableExtra/vignettes/awesome_table_in_pdf.pdf
• flextable (for office and HTML)
  • https://davidgohel.github.io/flextable/reference/footnote.html
• GT (for HTML mainly for now)
  • https://gt.rstudio.com/reference/tab_footnote.html

With those tools, you can format your table as you wish !