diff --git a/R/internal.R b/R/internal.R
index 5d3fc73..ab86ae5 100644
--- a/R/internal.R
+++ b/R/internal.R
@@ -9,7 +9,7 @@
 #'
 #' @return Difference between x and y in radians. If signed is TRUE, the signed difference is returned. If signed is FALSE, the absolute difference is returned. Note: The difference is the smallest difference, eg.
 #' @references adapted from https://stackoverflow.com/a/7869457
-#'
+#' @keywords internal
 #' @examples
 #' # Load data.table
 #' library(data.table)
diff --git a/_pkgdown.yml b/_pkgdown.yml
index 2a315b4..a25bd5f 100644
--- a/_pkgdown.yml
+++ b/_pkgdown.yml
@@ -14,6 +14,7 @@ reference:
     contents:
     - '`edge_dist`'
     - '`edge_nn`'
+    - '`edge_delay`'
   - title: Social network tools
     desc: ~
     contents:
diff --git a/codemeta.json b/codemeta.json
index db70f38..4342506 100644
--- a/codemeta.json
+++ b/codemeta.json
@@ -214,7 +214,7 @@
     },
     "SystemRequirements": "GDAL (>= 2.0.1), GEOS (>= 3.4.0), PROJ (>= 4.8.0),\n    sqlite3"
   },
-  "fileSize": "2048.117KB",
+  "fileSize": "2048.136KB",
   "citation": [
     {
       "@type": "ScholarlyArticle",