diff --git a/FormatAbstract.md b/FormatAbstract.md
index 4c632f4..d04d31c 100644
--- a/FormatAbstract.md
+++ b/FormatAbstract.md
@@ -1,34 +1,13 @@
 The `FormatAbstract` class implements the [`FormatInterface`](FormatInterface) interface with basic functional behavior and adds common helper functions for new formats:
 
-* [setCharset](#the-setcharset-function)
-* [getCharset](#the-getcharset-function)
 * [setContentType](#the-setcontenttype-function)
 * [callContentType](#the-callcontenttype-function)
-* [getItems](#the-getitems-function)
-* [setExtraInfos](#the-setextrainfos-function)
-* [getExtraInfos](#the-getextrainfos-function)
 * [sanitizeHtml](#the-sanitizehtml-function)
 * [array_trim](#the-array_trim-function)
 
 #Functions
 
-#The `setCharset` function
-
-The `setCharset` function receives the character set value as string and returns the object instance.
-
-```PHP
-setCharset(string): self
-```
-
-#The `getCharset` function
-
-The `getCharset` function returns the character set value.
-
-```PHP
-getCharset(): string
-```
-
-#The `setContentType` function
+##The `setContentType` function
 
 The `setContentType` function receives a string defining the content type for the HTML header and must return the object instance.
 
@@ -36,7 +15,7 @@ The `setContentType` function receives a string defining the content type for th
 setContentType(string): self
 ```
 
-#The `callContentType` function
+##The `callContentType` function
 
 The `callContentType` function applies the content type to the header data and must return the object instance.
 
@@ -44,38 +23,7 @@ The `callContentType` function applies the content type to the header data and m
 callContentType(): self
 ```
 
-#The `getItems` function
-
-The `getItems` function returns the items previously set by the [`setItems`](FormatInterface#the-setitems-function) function. If no items where set previously this function returns an error.
-
-```PHP
-getItems(): array
-```
-
-#The `setExtraInfos` function
-
-The `setExtraInfos` function receives an array of elements with additional information to generate format outputs and must return the object instance.
-
-```PHP
-setExtraInfos(array $infos): self
-```
-
-Currently supported information are:
-
-Name | Description
------|------------
-`name` | Defines the name as generated by the bridge
-`uri` | Defines the URI of the feed as generated by the bridge
-
-#The `getExtraInfos` function
-
-The `getExtraInfos` function returns the information previously set via the [`setExtraInfos`](#the-setextrainfos-function) function.
-
-```PHP
-getExtraInfos(): array
-```
-
-#The `sanitizeHtml` function
+##The `sanitizeHtml` function
 
 The `sanitizeHtml` function receives an HTML formatted string and returns the string with disabled `<script>`, `<iframe>` and `<link>` tags.
 
@@ -83,7 +31,7 @@ The `sanitizeHtml` function receives an HTML formatted string and returns the st
 sanitizeHtml(string $html): string
 ```
 
-#The `array_trim` function
+##The `array_trim` function
 
 The `array_trim` function receives an array of strings and returns the same array with all elements trimmed (like using the `trim` function on all elements)