/**

 \page page_appendices Appendices

 \tableofcontents

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\section appendix_keyboard_shortcuts Keyboard Shortcuts

On Apple computers, use the Apple Command key instead of Ctrl.

| Key Combo | Function |
| :-------: | :------- |
| `F1` | open widget dialog |
| `F2` | move widget earlier in tree |
| `F3` | move widget later in tree |
| `F7` | move widgets into group |
| `F8` | ungroup widgets |
| `Delete` | delete selected widgets |
| `Ctrl-1..9` | load project from history |
| `Ctrl-A` | select all |
| `Shift-Ctrl-A` | select none |
| `Alt-B` | show or hide Widget Bin |
| `Ctrl-C` | copy widgets |
| `Alt-C` | show or hide Code View window |
| `Shift-Ctrl-C` | generate C++ code files |
| `Ctrl-G` | grid setting dialog |
| `Ctrl-I` | merge project file into current project |
| `Ctrl-N` | start a new project, close the current project |
| `Shift-Ctrl-N` | new project from template |
| `Ctrl-O` | open project file |
| `Shift-Ctrl-O` | toggle overlays |
| `Ctrl-P` | print all visible project windows |
| `Alt-P` | open FLUID settings dialog |
| `Ctrl-Q` | quit FLUID |
| `Ctrl-S` | save project |
| `Shift-Ctrl-S` | save project with new name |
| `Ctrl-U` | duplicate selected widgets |
| `Ctrl-V` | paste last copied widgets |
| `Shift-Ctrl-W` | write i18n translation file |
| `Ctrl-X` | cut selected widgets |
| `Alt-X` | show shell command settings |
| `Ctrl-Z` | undo |
| `Shift-Ctrl-Z` | redo |

<!-- | `Alt-G` | rund last shell command again | -->


| Action | Function in Layout Editor |
| :----: | :------------------------ |
| `left mouse button (LMB)` | select one widget |
| `LMB-drag` | select multiple widgets with selection box |
| `Shift-LMB` | extend widget selection |
| `Shift-LMB-Drag` | toggle selection in selection box |
| `Shift-LMB-Drag` | resize window proportionally |
| `Tab` | select next widget |
| `Shift-Tab` | select previous widget |
| `Arrow` | move selected widgets by one unit |
| `Shift-Arrow` | resize by one unit |
| `Ctrl-Arrow` | move by grid units |
| `Shift-Ctrl-Arrow` | resize by grid units |


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\section appendix_fileformat .fl File Format

FLUID edits and saves its state in `.fl` project files. These files are text,
and you can (with care) edit them in a text editor, perhaps to get some special
effects. The `.fl` file format is described in detail in the file
`fluid/README_fl.txt` which is part of the FLTK source code repository.

<!-- ---------------------------------------------------------------------- -->

\section appendix_licenses External Licenses

FLUID uses graphical images based on the Zendesk Garden Stroke icon set:

[https://github.com/zendeskgarden](https://github.com/zendeskgarden)
Garden Stroke is licensed under the
[Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0.html).

FLUID includes templates based on 7GUIs:

[7GUIs](https://7guis.github.io/7guis/) was created as a spin-off
of the master’s thesis Comparison of Object-Oriented and Functional
Programming for GUI Development by Eugen Kiss at the Human-Computer
Interaction group of the Leibniz Universität Hannover in 2014.

With kind permission by Prof. Dr. Michael Rohs.

 */