diff --git a/MANUAL.txt b/MANUAL.txt
index cbb8dae..4d7e7d2 100644
--- a/MANUAL.txt
+++ b/MANUAL.txt
@@ -6,13 +6,14 @@
 
   -o, --output        (Default: ) Set path to output chapter file
 
-  -l, --length        (Default: 5) Set chapter length (time from chapter to next chapter) in minutes (1-30)
+  -l, --length        (Default: 5) Set chapter length (time from chapter to next chapter) in minutes (1-60)
+                      A value of 0 will open the manual Chapter length menu
 
   -c, --close         (Default: false) Close application automatically after chapter creation and on errors
 
   -n, --nochapters    (Default: false) Ignore existing chapters in video file
 
-  -t, --title         (Default: ) Set chapter title (is used for all chapters)
+  -t, --title         (Default: auto) Set chapter title (is used for all chapters)
 
   -s, --style         (Default: all) Set chapter style (chapters, meta, all)
                       [chapters = simple chapter format Matroska compatible, meta = METAINFO ffmpeg compatible]
@@ -22,6 +23,8 @@
                       WARNING: this might lead to a huge count of chapters and is therefore not recommended for regular
                       use!
 
+  -v, --validate      (Default: false) Validate assumpted chapters with created chapters
+
   --help              Display this help screen.
 
   --version           Display version information.
@@ -44,6 +47,6 @@ https://www.nerdfonts.com/
 
 ────────────────────────────────────────────────────── Copyright ───────────────────────────────────────────────────────
 
-Based on FFchapters2 V2.6
+Based on FFchapters2 V2.7
 https://github.com/feuster/FFchapters2
 © Alexander Feuster 2023-2024
diff --git a/README.md b/README.md
index 1c4a3c3..9a95824 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@ As alternative you can use the [AddChaptersToMovieFile.cmd](./AddChaptersToMovie
 
 There is also the optional raw mode creates an additional timestamp raw file for independent use.
 
+An optional validation can inform you if the created chapters differ from the chapter assumption.
+
 ## FFmpeg Installation
 The required FFmpeg is not be bundled with the FFchapters2 Linux release.
 In that case or if you intend to use another ffmpeg binary for the Windows version you can download a FFmpeg binary