PDB debugging symbols in order to verify if the needed debugging information is properly generated.
Archived PDBs are useful if you want to analyze a dump file like the minidump the Windows Phone Store Crash Reports provides.
To my surprise is there no ready-to-use free tool for inspecting a PDB file and its functions. Fortunately wrote Marc Ochsenmeier
a great Codeproject article a few years ago and provided sample code for a nice little tool he calls Pdb Inspector. Unfortunately was there no binary which runs on my Win 8.1 x64 machine and the code did not compile, so I had to modify it a bit and got it compiling. You can grab a binary of a fresh Pdb Inspector here.