How to define localized strings?

I've figured out how to define localized error messages using LOC resource in module.xml

```

```

And supporting file `src/My/Errors.xml`

```

Value %1 is invalid

```

Which when loaded generates `localize/My/MyErrrors.xml` file in the working copy and `My.Errors` include routine (read only):

```
ROUTINE My.Errors [Type=INC]
#define MyErrCustomError "CustomError"
```

Which I can include and use as `$$$ERROR($$$MyErrCustomError, 42)`

Is there a ZPM way to do this for non-error strings such as form labels?