Adjective

1. legible, possible to read or at least decipher

   If that sign was still readable we'ld know were we are!

2. which can be read, i.e. accessed or played, by a certain technical type of device

   No sale, those aren't readable with my DVD-player!

3. enjoyable to read, of an acceptable stylistic quality or at least functionally composed

   These assembly instructions aren't readable, I still don't have a clue how to start!