diff --git a/lib/documents.js b/lib/documents.js
index 0c96f5fe..366c913f 100644
--- a/lib/documents.js
+++ b/lib/documents.js
@@ -289,9 +289,9 @@ function singleReadOutputTransform(headers, data) {
  * @param {string|transactions.Transaction}  [txid] - a string
  * transaction id or Transaction object identifying an open
  * multi-statement transaction
- * @param {string}  [transform] - the name of a transform extension to apply
- * to each document; the transform must have been installed using
- * the {@link transforms#write} function.
+ * @param {string|mixed[]}  [transform] - the name of a transform extension to apply to each document
+ * or an array with the name of the transform extension and an object of parameter values; the
+ * transform must have been installed using the {@link transforms#write} function.
  * @param {number[]}  [range] - the range of bytes to extract
  * from a binary document; the range is specified with a zero-based
  * start byte and the position after the end byte as in Array.slice()
@@ -458,9 +458,9 @@ function readDocumentsImpl(contentOnly, args) {
  * @param {string|transactions.Transaction}  [txid] - a string
  * transaction id or Transaction object identifying an open
  * multi-statement transaction
- * @param {string}  [transform] - the name of a transform extension to apply
- * to the document; the transform must have been installed using
- * the {@link transforms#write} function.
+ * @param {string|mixed[]}  [transform] - the name of a transform extension to apply to each document
+ * or an array with the name of the transform extension and an object of parameter values; the
+ * transform must have been installed using the {@link transforms#write} function.
  * @returns {WritableStream} a stream for writing the database document; the
  * stream object also has a result() function that takes
  * a {@link documents#writeResult} success callback.
@@ -606,9 +606,9 @@ function writeListOutputTransform(headers, data) {
  * @param {string|transactions.Transaction}  [txid] - a string
  * transaction id or Transaction object identifying an open
  * multi-statement transaction
- * @param {string}  [transform] - the name of a transform extension to apply
- * to each document; the transform must have been installed using
- * the {@link transforms#write} function.
+ * @param {string|mixed[]}  [transform] - the name of a transform extension to apply to each document
+ * or an array with the name of the transform extension and an object of parameter values; the
+ * transform must have been installed using the {@link transforms#write} function.
  * @param {string}  [forestName] - the name of a forest in which to write
  * the documents.
  * @param {string} [temporalCollection] - the name of the temporal collection;