How to listen PDF documents very very easy & simple

How to listen PDF documents
                                        

Now you will be able to listen ODF document instead of reading it
Just try out these following keys.....

ctrl+shift+b----------->>To hear the whole document,whole file

ctrl+6shift+v--------->>To hear only the opened page

ctrl+shift+c----------->>To pause,resume

ctrl+shift+e----------->>to stop