For each validator and filter a own chapter/section needs to be added with description and examples. In detail the following chapters are missing:

• Zend_Filter_Alnum
• Zend_Filter_Alpha
• Zend_Filter_BaseName
• Zend_Filter_Boolean
• Zend_Filter_Digits
• Zend_Filter_Dir
• Zend_Filter_HtmlEntities
• Zend_Filter_Int
• Zend_Filter_StringTrim
• Zend_Filter_StripNewLines

• Zend_Filter_StripTags

• Zend_Validate_Alnum

• Zend_Validate_Alpha
• Zend_Validate_Between
• Zend_Validate_Ccnum (deprecated.... probably no longer document it)
• Zend_Validate_Date
• Zend_Validate_Digits
• Zend_Validate_Float
• Zend_Validate_GreaterThan
• Zend_Validate_Hex
• Zend_Validate_Iban
• Zend_Validate_Int
• Zend_Validate_LessThan
• Zend_Validate_Regex
• Zend_Validate_StringLength