Replace following text in 5.1.10 "The <text:number> element contains the text of a formatted number which is present when numbering is applied to an element. This text may be used by implementations that do not support numbering but should be ignored by implementations that do support numbering." by "The <text:number> element contains the text of a formatted number which is present when a list style is applied to an element whose corresponding list level style specifies that the list label is a number. This text may be used by implementations that do not support the automatic generation of numbering but should be ignored by implementations that do support it."