diff --git a/docs/text/sourcetext.md b/docs/text/sourcetext.md
index b74ebb6..177216b 100644
--- a/docs/text/sourcetext.md
+++ b/docs/text/sourcetext.md
@@ -6,6 +6,23 @@ These functions are accessible on the [Text.sourceText](text.md#textsourcetext)
 
 ---
 
+## JavaScript String methods
+
+When the JavaScript expression engine is active, After Effects interprets a Source Text value as a JavaScript String. Because the current property is the default object for an expression, supported String instance methods can be called without an explicit receiver.
+
+For example, if the Source Text value is `"AE"`, each of these expressions returns `"AEAEAE"`:
+
+```js
+repeat(3);
+value.repeat(3);
+text.sourceText.repeat(3);
+```
+
+!!! note
+    `repeat()` is the standard JavaScript [`String.prototype.repeat()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat) method, not a global After Effects method. The receiver-less form is specific to a Source Text expression and is undefined on numeric properties. To repeat a different string, call the method on that string explicitly, such as `"AE".repeat(3)`.
+
+---
+
 ## Attributes
 
 ### SourceText.isHorizontalText