diff --git a/Automatic-output-splitting.md b/Automatic-output-splitting.md
index 074830c..876478a 100644
--- a/Automatic-output-splitting.md
+++ b/Automatic-output-splitting.md
@@ -1,17 +1,15 @@
-Due to limitations of **KindleGen** and limited space available on newer Kindle models maximal size of output file is limited by KCC.
-Input will be automatically split into multiple _MOBI_ files **if correct file structure is used.**
+Source directories/archives need to use one of three directory structures. 
 
-For now KCC support three directory structures. If none of these structures will be used KCC will try to create a single MOBI file. If input batch is very big conversion might fail due to **KindleGen** or memory  limitations.
+Due to limitations of **KindleGen** and **Kindle** itself maximal size of output file is limited by KCC.
+Input will be automatically split into multiple _MOBI_ files if correct file structure is used.
 
-**Additionally directory structure is used to generate table of contents.**
+**Naming conventions presented below are NOT necessary.** Only structure matter. Directory structure is also used to generate table of contents.
 
 ![FS](http://i.imgur.com/NY8MZAl.png)
 
 
 **Variant A** - Output will be divided into ~400MB parts.
 
-**Variant B** - Output will be divided into ~400MB parts. Splits will occur between chapters.
+**Variant B** - If option _Output split_ is enabled every subdirectory will be placed in separate MOBI file. Otherwise output will be divided into ~400MB parts. Splits will occur between chapters.
 
-**Variant C** - Every volume will be placed in separate _MOBI_ file. If single volume will be too big it will be split into smaller parts.
-
-**Naming conventions presented above are NOT necessary. Only structure matter.**
\ No newline at end of file
+**Variant C** - Every volume will be placed in separate _MOBI_ file.
\ No newline at end of file