The flextable package facilitates access to and manipulation of tabular reporting elements from R.
The documentation of functions can be opened with command help(package = "flextable").
To learn more about flextable, start with the vignettes:
browseVignettes(package = "flextable").
flextable() function is producing flexible tables where each cell
can contain several chunks of text with their own set of formatting
properties (bold, font color, etc.). Function compose lets customise
text of cells.