===== Special Keys =====
Send any code, in decimal, listed on the Keypad HID code page (0x07) found on USB HID Usage Tables (HUT) http://www.usb.org/developers/hidpage/Hut1_12v2.pdf (section 10, p. 53)

^Keyboard Modifier ^ HID Code     ^ Element                                           ^
| Return | 40 | <Return> |
| Escape | 41 | <Escape> |
| Backspace | 42 | <Backspace> |
| Tab | 43 | <Tab> |
| Non-US# | 50 | <Non-US#> |
| Caps Lock | 57 | <CapsLock> |
| F1 | 58 | <F1> |
| F2 | 59 | <F2> |
| F3 | 60 | <F3> |
| F4 | 61 | <F4> |
| F5 | 62 | <F5> |
| F6 | 63 | <F6> |
| F7 | 64 | <F7> |
| F8 | 65 | <F8> |
| F9 | 66 | <F9> |
| F10 | 67 | <F10> |
| F11 | 68 | <F11> |
| F12 | 69 | <F12> |
| F13 | 104 | <F13> |
| F14 | 105 | <F14> |
| F15 | 106 | <F15> |
| F16 | 107 | <F16> |
| F17 | 108 | <F17> |
| F18 | 109 | <F18> |
| F19 | 110 | <F19> |
| F20 | 111 | <F20> |
| F21 | 112 | <F21> |
| F22 | 113 | <F22> |
| F23 | 114 | <F23> |
| F24 | 115 | <F24> |
| Print Screen | 70 | <PrintScreen> |
| Scroll Lock | 71 | <ScrollLock> |
| Pause | 72 | <Pause> |
| Insert | 73 | <Insert> |
| Home | 74 | <Home> |
| PageUp | 75 | <PageUp> |
| Delete (Forward) | 76 | <Delete> |
| End | 77 | <End> |
| Page Down | 78 | <PageDown> |
| Right Arrow | 79 | <RightArrow> |
| Left Arrow | 80 | <LeftArrow> |
| Down Arrow | 81 | <DownArrow> |
| UpArrow | 82 | <UpArrow> |
| NumLock | 83 | <NumLock> |
| Application | 101 | <Application> |
| Key Pad / | 84 | <KP/> |
| Key Pad * | 85 | <KP*> |
| Key Pad - | 86 | <KP-> |
| Key Pad + | 87 | <KP+> |
| Key Pad Enter | 88 | <KPEnter> |
| Key Pad 1 | 89 | <KP1> |
| Key Pad 2 | 90 | <KP2> |
| Key Pad 3 | 91 | <KP3> |
| Key Pad 4 | 92 | <KP4> |
| Key Pad 5 | 93 | <KP5> |
| Key Pad 6 | 94 | <KP6> |
| Key Pad 7 | 95 | <KP7> |
| Key Pad 8 | 96 | <KP8> |
| Key Pad 9 | 97 | <KP9> |
| Key Pad 0 | 98 | <KP0> |
| Key Pad . | 99 | <KP.> |
| Key Pad = | 103 | <KP=> |