notices.md in licensed-3.9.0

- old
+ new
@@ -1,12 +1,14 @@
 # `licensed notices`
 
 Outputs license and notice text for all dependencies in each app into a `NOTICE` file in the app's `cache_path`.  If an app uses a shared cache path, the file name will contain the app name as well, e.g. `NOTICE.my_app`.
 
-`NOTICE` file contents are retrieved from cached records, with the assumption that cached records have already been reviewed in a compliance workflow.
+`NOTICE` file contents are retrieved from cached records when the `--computed`/`-l` option is not set, with the assumption that cached records have already been reviewed in a compliance workflow.  When the `--computed`/`-l` option is set and a dependency's license is not found, that dependency's license text will be empty in the `NOTICE` file.
 
 ## Options
 
 - `--config`/`-c`: the path to the licensed configuration file
    - default value: `./.licensed.yml`
 - `--sources`/`-s`: runtime filter on which dependency sources are run.  Sources must also be enabled in the licensed configuration file.
    - default value: not set, all configured sources
+- `--computed`/`-l`: use live computed when generating a `NOTICE` file
+   - default value: not set, `NOTICE` file generated from cached records