The conversion of the file BOOK to RTF will allow you to edit a file using other software than before. The conversion BOOK to RTF is particularly helpful in cases where you want to give certain features to the data in the BOOK file, and all the programs that support the BOOK format do not have the possibility to introduce the desired changes.
Just download one of the programs from the list and install it on your computer. After starting the program, select BOOK file that you want to convert. Then select the target format (in this case RTF) and follow the instructions. Save the converted RTF file in the selected location. From this moment you can open the RTF file with all the programs that you will find here.