Here is a list of all topics with brief descriptions:

Password store backends	The operations on a password store and the two ways QtPass carries them out
Running external programs	The queue every child process goes through, and what QtPass knows about each kind of process
Keys and recipients	GPG keys, the .gpg-id recipient lists and their signatures
Store tree and entries	The password store as files on disk: the tree shown in the main window, path checks, and the content of an entry
Settings and profiles	Configuration: what is stored, how it is loaded and saved, and the profiles that name several stores
Windows and dialogs	The main window, its panels and helpers, and the dialogs
Handling secrets in the interface	The clipboard and the widgets that are allowed to hold a decrypted secret
Application support	Start-up, single-instance handling, logging and general helpers