diff --git a/core/modules/migrate/migrate.api.php b/core/modules/migrate/migrate.api.php
index 863f767..4e0d911 100644
--- a/core/modules/migrate/migrate.api.php
+++ b/core/modules/migrate/migrate.api.php
@@ -24,11 +24,11 @@
  * Source, process, and destination phases are each provided by plugins. Source
  * plugins extract data from a data source in "rows", containing "properties".
  * Each row is handed off to one or more series of process plugins, where each
- * series operates to transform properties into one result property. After all
- * the properties are processed, the resulting row is handed off to a
- * destination plugin, which saves the data. Source,
- * process and destinations plugins are brought together to extract, transform
- * and load a specific type of data by a migration plugin.
+ * series operates to transform the row's properties in order to prepare them
+ * for the destination plugin. After all the properties are processed, the
+ * resulting row is handed off to a destination plugin, which saves the data.
+ * Source, process and destinations plugins are brought together to extract,
+ * transform and load a specific type of data by a migration plugin.
  *
  * @section sec_migrations Migration plugins
  * The definition of how to migrate each type of data is stored in a migration