Ryuzine Machine's built-in editor is a customized version of the open-source Xinha Editor project.  Xinha supports a number of plugins, many of which do ship with Ryuzine Machine, however most of them are not enabled by default.  The reasons they are disabled were to make the editor more user friendly and so it would only require a simple HTML server to use (in case someone is running it on a server that does not have or does not support server-side scripting languages like PHP).

However, if you ARE running Ryuzine Machine on a server that can process PHP you can enable the more advanced editor features available in the "ExtendedFileManager" plugin!  This allows you to upload files to your server, create folders, rename files, and even use a simple web-based image editor to crop, rotate, and resize your images.

ENABLING THE PLUGIN

Open path/to/ryuzine/ryu_dev/editor.config.js in a plain text or code editor.

At line 141 you'll find "Linker" listed in the plugins.

Insert 'ExtendedFileManager', in front of 'Linker',

Save the editor.config.js file and upload it to your server

CONFIGURING THE PLUGIN

Without any configuration the plugin will point into the /ryu_dev/xinha/plugins/ExtendedFileManager/demo_images which is just a sample folder.  You ideally want it to point into your actual Ryuzine images folder, which is at the same level as the "ryu_dev" folder.  To do this you need to edit the plugin's configuration file at /plugins/ExtendedFileManager/config.inc.php so open it in a plain text or code editor:

At line 61 replace it with $IMConfig['images_dir'] = '../../../../images';

At line 302 replace it with $IMConfig['allow_upload'] = true;

TEST THE PLUGIN

Clear the browser's cache and reload Ryuzine Machine.  Click on the "Insert Image" button in the editor toolbar.  A different dialog box should appear with file management tools.  Try to upload a file and create a new directory.  If you are unable to do so you'll need to change the server's permissions for the "images" folder to 755.

There are a number of other plugins in the "ryu_dev/xinha/plugins/" folder you can also try enabling and configuring depending on your needs.  Keep in mind, however, as you add more button sets to the toolbars  the space to compose your Ryuzine will be reduced and the button hiding function when switching to "code editing" mode may not hide the additional buttons, or may hide additional buttons even when the tools could have been used in code editing mode.