diff --git a/README.md b/README.md
index 7e92936..a0e5f68 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ Maps text from one file to another with a time offset. The command supports two
 MAP <text_source> <text_start> <time_start> <count>
 ```
 - `<text_source>`: The source SRT file for text, specified as `1` or `2`.
-- `<text_start>`: The starting index of the text to map.
+- `<text_start>`: A range of indices in the text source (e.g., `5-10`).
 - `<time_start>`: The starting index of the time to map.
 - `<count>`: The number of subtitles to map.