Install Reader — operation performed only once; the installation from an unknown source has to be allowed.
Launch Reader and select *.cro file from a displayed list — a crossword ready for filling-in is displayed.
Explanation of filename extensions: 1 *.ecw — file containing a crossword structure, generated with the use of EclipseCrossword application.
2 *.apk — Android Package file in a format used for distribution and installation of Builder and Reader applications for Android OS.
3 *.cro — file in a universal format, created by Builder application and containing data for generation of a crossword mobile version.
A crossword is being solved offline.
The above steps are presented in the following figure.
Builder and Reader applications are created by Adam Kowalski - a student of University of Information Technology in Warsaw.