API-Reference.md

@@ -54,6 +54,7 @@ Function | Description
 [`write_dup_func.R`](https://git.noc.ac.uk/brecinosrivas/icoads-r-hostace/-/blob/master/rutils/write_dup_func.R)  | Writes duplicate information in a pipe-delimited year-month output format. The report `uid` is followed by the report `id` then a flag with value 1 if the `id` has been changed, 0 if it remains the same. <br> An example of the format is: <br> ICOADS-30-0Y0HJK &#124; 32024 &#124; 0 <br> ICOADS-30-0Y0HJL &#124; 14 00117 &#124; 1
 
 **ICOADS variables used**
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 Visit the [ICOADS main website](https://icoads.noaa.gov/) or check th [IMMA report](https://icoads.noaa.gov/e-doc/imma/R3.0-imma1.pdf).