Crash info on Android Device

I learned that there are 2 kinds of crash information on the device.
(There might be more. If I find more, I will add it)

1. Tombstone
You can find this crash info file under /data/tombstones/.
The filenames look like tombstone_00, tombstone_01 ...
This crash file can be interpreted by addr2line tool.
Actually I did not try this tool. (at the moment, linux is not available.. sorry)

2. anr (android non response)
ANR traces are logged in the folder /data/anr as a filename "traces.txt"
This file is in plain text format.
Use any text editor tool to open this log.
It shows java stack traces when anr have occurred.