Solution: Cannot use PGP features

You cannot go to menu items related to PGP because they are always grayed out.

Perhaps wija does not consider that GnuPG has been installed on your computer. This may happen because of one of the following reasons:

GnuPG has not actually been installed on your computer.
- Check whether you can use gpg command or not by the following¹.
```
$ gpg --version
```
The runtime environment for GnuPG has not been correctly set on wija.
- If you can use gpg command, but you cannot use PGP-related menu items, perhaps this is the reason.

[In case GnuPG has not actually been installed]: Install it according to the installation guide.
[In case the runtime environment for GnuPG has not been correctly set]: Set the absolute path for gpg command (where you can find gpg command file) at PGP preference panel.

In either case, exit wija once, and start it again.

¹	It is possible that the program is not executed because the command path is not set. It is not necessary to set the command path because wija uses the absolute path to the gpg command.