Pakillo

## from: https://logfc.wordpress.com/2017/03/15/adding-figure-labels-a-b-c-in-the-top-left-corner-of-the-plotting-region/

fig_label <- function(text, region="figure", pos="topleft", cex=NULL, ...) {
 
  region <- match.arg(region, c("figure", "plot", "device"))
  pos <- match.arg(pos, c("topleft", "top", "topright", 
                          "left", "center", "right", 
                          "bottomleft", "bottom", "bottomright"))
 
  if(region %in% c("figure", "device")) {