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docs/integration-guide.md

@@ -124,7 +124,8 @@ the library path for `replaceOriginalFile` 2.0.0.
 Both progress-enabled copy operations verify the destination size and retry
 failed writes twice after removing the partial destination. Their `Copy method`
 input defaults to `auto` (the operating system's native file-copy path), with
-`stream` available as a fallback for problematic SMB/CIFS mounts.
+`stream` available as a fallback for problematic SMB/CIFS mounts. Stream mode
+supports 4 MB, 16 MB, and 64 MB buffers.
 Both progress-enabled plugins require
 `FlowHelpers/1.0.0/copyWithProgress.js`; the installer downloads it
 automatically.