This implies that this plugin is published on the npm registry as `strapi-plugin-content-manager`.
The command installs the plugin in the `node_modules` folder of your Strapi application, and then, move the plugin itself in the `./plugins` folder, so you can edit and version it.
### Development mode
In order to make contributors life easier, a command is dedicated to development mode:
This command creates a symlink between the Strapi application and the plugin, which should have been previously installed globally (`npm link` or `npm install plugin-name -g`).