diff --git a/CHANGELOG.md b/CHANGELOG.md
index d20b6be3..eeb4eab4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+v0.6.55
+* Improvements to the web UI intersections tool.
+
 v0.6.54
 * Only check for line self-intersections in web UI if user clicks the "Check line intersections" label.
 * Added support for curly-bracket delimited expressions to -run command strings.
diff --git a/REFERENCE.md b/REFERENCE.md
index e8f10764..ff2bd2a1 100644
--- a/REFERENCE.md
+++ b/REFERENCE.md
@@ -849,6 +849,13 @@ Common options: `name=` `+` `target=`
 mapshaper counties.shp -lines STATE_FIPS -o boundaries.shp
 ```
 
+```bash
+# Example: add the names of neighboring countries to each section of border
+mapshaper countries.geojson \
+  -lines each='COUNTRIES = A.NAME + (B ? "," + B.NAME : "")' \
+  -o borders.geojson
+```
+
 
 ### -merge-layers
 
@@ -1111,6 +1118,7 @@ module.exports = {
     return `-i data.json`;
   }
 };
+```
 
 
 ### -shape
diff --git a/package-lock.json b/package-lock.json
index d23627f6..0ec6d8ce 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mapshaper",
-  "version": "0.6.54",
+  "version": "0.6.55",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "mapshaper",
-      "version": "0.6.54",
+      "version": "0.6.55",
       "license": "MPL-2.0",
       "dependencies": {
         "@placemarkio/tokml": "^0.3.3",
diff --git a/package.json b/package.json
index b9bd4cc4..0244e2c9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mapshaper",
-  "version": "0.6.54",
+  "version": "0.6.55",
   "description": "A tool for editing vector datasets for mapping and GIS.",
   "keywords": [
     "shapefile",