diff --git a/R/getSampleDataFromFile.r b/R/getSampleDataFromFile.r
index 9cb560a10e987e6b0e017913ca288448cf1e4cd6..34f81f986130e09edfaf15975dde66753a4dee77 100644
--- a/R/getSampleDataFromFile.r
+++ b/R/getSampleDataFromFile.r
@@ -1,6 +1,7 @@
 #' Import Sample Data for WRTDS
 #'
-#' Imports data from a user-supplied file, and converts it to a Sample data frame, appropriate for WRTDS calculations.
+#' Imports data from a user-supplied file, and converts it to a Sample data frame (including summing multiple constituents), appropriate for WRTDS calculations. See
+#' section 3.4 of the vignette for more details.
 #'
 #' @param filePath string specifying the path to the file
 #' @param fileName string name of file to open
diff --git a/man/getSampleDataFromFile.Rd b/man/getSampleDataFromFile.Rd
index 41907f997828a77f8393939512736290ebaf77f7..9ab9723ca0fc1518b3bd5d724b7adcf6a7861a01 100644
--- a/man/getSampleDataFromFile.Rd
+++ b/man/getSampleDataFromFile.Rd
@@ -25,8 +25,9 @@
 }
 \description{
   Imports data from a user-supplied file, and converts it
-  to a Sample data frame, appropriate for WRTDS
-  calculations.
+  to a Sample data frame (including summing multiple
+  constituents), appropriate for WRTDS calculations. See
+  section 3.4 of the vignette for more details.
 }
 \examples{
 # Examples of how to use getSampleDataFromFile: