lifeboat What is obligatory for a servant for his master? Famous for: board the lifeboat --- Features and information about the application --- 1 --- The application contains a complete book, which is aboard the lifeboat 2 --- The text is complete and identical to the paperback book 3 --- The doors were classified and arranged as in the book 4 --- And you can share pages 5---Can read in night mode 6---Pages can be saved and referenced 7 --- Font enlargement and reduction feature 8 --- Index of doors in an elegant and tidy manner 9 --- Contains a button for fast page rendering and rewinding