Output an R Markdown header with specified parameters.
ld_rmarkdown_header(
title,
author = NULL,
date = NULL,
output = c("html_document", "pdf_document", "word_document")
)An S3 instance of class `listdown_header` containing the R Markdown header data.
the title of the page.
the author of the page. The default is NULL - no author.
the date for the page. The default is NULL - no date.
the output format of the page. If NULL then no output format. The default is an html document.