diff --git a/documentation/new-notes/PR-603.md b/documentation/new-notes/PR-603.md
new file mode 100644
index 000000000..72a96e178
--- /dev/null
+++ b/documentation/new-notes/PR-603.md
@@ -0,0 +1,14 @@
+### Support for multiline strings in iocsh files
+
+GitHub [PR #603](https://github.com/epics-base/epics-base/pull/603)
+
+This update introduces support for multiline strings in IOC shell (iocsh) files.
+Previously, string values in iocsh files were limited to a single line, making
+it difficult to include longer or formatted text. With this change, users can
+now define strings that span multiple lines, improving readability and
+flexibility when configuring IOC shell scripts.
+
+To create a multiline string, end a line with a backslash (`\`). The following
+line, including any leading whitespace, will be joined to the previous line.
+If the backslash is immediately followed by any character other than a newline,
+it will not be treated as a multiline continuation.