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+jeebak's JD45 layout
+=======================
+NOTE: This is a port of jeebak's planck layout, for jd45.
+
+This WIP keymap attempts to minimize fingers straying away from the home row.
+To aid in this endeavor, when additional modifyer keys to switch layers are
+needed, they will be mapped to home row keys. The `keymap.c` file will contain
+the exact changes. The diagrams in this README shows the highlights of the
+changes from the default mappings.
+
+I also decided to change all calls to `persistant_default_layer_set()` to
+`default_layer_set()` since this is my personal perference.
+
+## Macros
+```
+#define ALT_TAB M(KC_ALT_TAB)
+```
+
+## Base Layers (Qwerty/Colemak/Dvorak)
+These base layers are mostly the same as the default mappings. The interesting
+changes are shown below.
+
+- The `Ctrl/Esc`, will emit an `Escape` when tapped, and act as a `Control` key when held,
+- `GUI/;` as `;` and `GUI`,
+- `Alt/"` as `"` and `Alt`,
+- `Sft/Ent` as `Enter` and `Shift`, and
+- `Hyper/Tab` as `Tab` and `Hyper`
+
+A `TODO` item is to see if it can also act as a `CapsLock` when double-tapped.
+The arrow keys, which have been moved to the
+[TouchCursor](http://martin-stone.github.io/touchcursor/) layer, have been
+replaced with the Media keys as shown. The `MC/kc` key activates the
+`MouseCursor` layer when held, and emits the corresponding `kc` for its layer,
+when tapped.
+```
+ ,---------+------+------+------+------+------+------+------+------+------+------+------+------.
+ |Hyper/Tab| Q | W | E | R | T | Y | U | I | O | P | [ | Bksp |
+ |---------`------`------`------`------`------`------`------`------`------`------`------`------|
+ | Ctrl/Esc | A | S | MC/D | F | G | H | J | K | L |GUI/; | Alt/" |
+ |----------`------`------`------`------`------`------`------`------`------`------`------------|
+ | Shift | Z | X | C | V | B | N | M | , | . | / | Sft/Ent |
+ |-----------`------`------`------`------`-----'-------`------`------`------`------`-----------|
+ | RGUI | Alt | GUI | Lower | TC/Space | TC/Space | Raise | Vol- | Vol+ | Play |
+ `-------+-------+-------+-------+---^^^----+---^^^----+---------+--------+--------+----------'
+```
+
+## Lower Layer (Symbols and Function Keys)
+The symbols and functions keys are essentially the same as the default mapping.
+The most notable changes are that the symbol keys from the `RAISE` layer have
+been moved here. The remaining Media keys replace those that are now on the
+base layers. The `BACKLIT` key has also been moved here.
+```
+ ,---------+------+------+------+------+------+------+------+------+------+------+------+------.
+ | ~ | ! | @ | # | $ | % | ^ | & | * | ( | ) | | Bksp |
+ |---------`------`------`------`------`------`------`------`------`------`------`------`------|
+ | [ | F1 | F2 | F3 | F4 | F5 | F6 | _ | + | { | } | "|" |
+ |----------`------`------`------`------`------`------`------`------`------`------`------------|
+ | ] | F7 | F8 | F9 | F10 | F11 | F12 | - | = | [ | ] | \ |
+ |-----------`------`------`------`------`-----'-------`------`------`------`------`-----------|
+ | Brite | | | | | | | Prev | Next | Mute |
+ `-------+-------+-------+-------+---^^^----+---^^^----+---------+--------+--------+----------'
+```
+
+## Raise Layer (Numbers and Arithmetic Operators)
+All of the numbers and arithmetic operators are available on this layer. Some
+keys are duplicated for the convenience of their positions. The `0` and `$`
+keys at the far left are for quick access to beginning and end of line in vim.
+```
+ ,---------+------+------+------+------+------+------+------+------+------+------+------+------.
+ | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | | Bksp |
+ |---------`------`------`------`------`------`------`------`------`------`------`------`------|
+ | $ | 4 | 5 | 6 | . | + | . | 4 | 5 | 6 | * | "|" |
+ |----------`------`------`------`------`------`------`------`------`------`------`------------|
+ | = | 7 | 8 | 9 | 0 | - | . | 1 | 2 | 3 | / | \ |
+ |-----------`------`------`------`------`-----'-------`------`------`------`------`-----------|
+ | Brite | | | | | | | Prev | Next | Mute |
+ `-------+-------+-------+-------+---^^^----+---^^^----+---------+--------+--------+----------'
+```
+
+## TouchCursor layer plus personal customizations
+[TouchCursor](http://martin-stone.github.io/touchcursor/) uses the `Space` key
+as the modifier, with the `IJKL` home row keys representing the inverted-T of
+the arrow keys. All of the default TouchCursor keymappings for the right hand
+are represented below. My personalizations include all of the keys shown for
+the left hand. Having the `Alt` and `Shift` keys (as well as the `Control` key
+from the base layers) readily accessible from the home row allows quick word
+jumps and highlighting when used in conjunction with the arrow keys. The
+`Alt-Tab` macro is not only useful under Windows, but also under Mac when used
+with alternative switchers like [HyperSwitch](https://bahoom.com/hyperswitch).
+The `Cmd-Tab` and `Ctrl-Tab` sequences are duplicated for easy access while in
+this layer. The `KC_UNDO, KC_CUT, KC_COPY, KC_PASTE, KC_FIND,` and `KC_AGAIN`
+keycodes do not seem to work. There are macros in place that'll "automatically"
+choose the correct version (`Cmd-Tab` vs. `Alt-Tab`, `Cmd-C` vs. `Ctrl-C`,
+etc.) depending on which layout you've currently selected (`AG_NORM` or
+`AG_SWAP`) in the `_ADJUST` layer. The `Desk_L` and `Desk_R` macros are what I
+use to switch between Virtual Desktops Left/Right. The `Tab_C`, `Tab_N` and
+`Tab_R` are for "Close Tab," "New Tab" and "Reopen Closed Tab" for apps such as
+Google Chrome.
+```
+ ,---------+------+------+------+------+------+------+------+------+------+------+------+------.
+ | AltTab |CmdTab|CtlTab| GUI |Shift | ~ |Insert| Home | Up | End | Bksp | | |
+ |---------`------`------`------`------`------`------`------`------`------`------`------`------|
+ | | Alt |Space |Tab_C | Find |Again | PgUp | Left | Down |Right |Desk_L| Desk_R |
+ |----------`------`------`------`------`------`------`------`------`------`------`------------|
+ | | Undo | Cut | Copy |Paste | ` | PgDn | Del |Tab_N |Tab_R |iTerm2| |
+ |-----------`------`------`------`------`-----'-------`------`------`------`------`-----------|
+ | | | | | | | | | | |
+ `-------+-------+-------+-------+---^^^----+---^^^----+---------+--------+--------+----------'
+```
+
+## Mouse Layer
+The Mouse layer, closely mimics the layout/behaviour of the TouchCursor layer.
+The `D` key (on QWERTY) is used to activate this layer. All 16 keycodes for the
+mouse from the `doc/keycode.txt` file are represented, and logically located,
+IMHO. The left and right click buttons are duplicated; on the right hand side,
+for a quick click here and there, and again on the left hand side for when the
+buttons need to be held for dragging things or highlighting text, thus allowing
+the right hand to be free to use the up/down/left/right actions.
+```
+ ,---------+------+------+------+------+------+------+------+------+------+------+------+------.
+ | | |ACCL0 | | | | |WHL_L | Up |WHL_R | BTN2 | | |
+ |---------`------`------`------`------`------`------`------`------`------`------`------`------|
+ | |ACCL2 | BTN2 | | BTN1 |ACCL1 |WHL_Up| Left | Down |Right | BTN4 | BTN5 |
+ |----------`------`------`------`------`------`------`------`------`------`------`------------|
+ | | | | | BTN3 | |WHL_Dn| BTN1 | | | BTN3 | |
+ |-----------`------`------`------`------`-----'-------`------`------`------`------`-----------|
+ | | | | | | | | | | |
+ `-------+-------+-------+-------+---^^^----+---^^^----+---------+--------+--------+----------'
+```