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 # bcat's Lily58 layout
 
-This split ergo layout is standard QWERTY on the default layer, with symbols on
-the lower layer, numbers/navigation on the raise layer, and media keys centered
-around the ESDF cluster in the adjust (raise + lower) layer. A few general
-principles went into this layout:
+This split ergo layout follows my preferred [Crkbd
+layout](https://github.com/qmk/qmk_firmware/tree/master/keyboards/crkbd/keymaps/bcat)
+with the following changes:
 
-* The number row is optional, as are the outermost bottom row keys and the
-"extra" keys on the innnermost columns below the controllers. This allows me to
-switch between this keyboard and a 40% like the
-[Crkbd](https://github.com/qmk/qmk_firmware/tree/master/keyboards/lily58/keymaps/bcat)
-without breaking muscle memory.
+* There's an optional number row at the top of the keyboard. I am quite used to
+using layers for numbers and symbols, so in practice this goes unused.
 
-* Space and Enter are on the big thumb keys so they're easy to press.
+* The dedicated Hyphen/Underscore and Equals/Plus keys on the number row are
+placed in the same positions as on the ErgoDox EZ. (There's no real reason for
+this; I just had to do _something_ with those keys.)
 
-* There are two shift keys because Right Shift is all that important, but just
-because I don't have any better ideas for what to put there.
-
-* Arrow keys are on VIM-style HJKL keys.
-
-* Home/End and Page Up/Page Down are equivalent to the arrow keys, but
-translated down one row.
-
-* Navigation is usable with just the right hand, to enable left-handed mousing
-at the same time. Additionally, Web page scrolling (Space, Shift+Space) is
-possible with just the left hand, for writing at the same time as scrolling.
-
-* Escape is easy to reach because Vim is life.
-
-* Since most of the modifiers are on the left half, keys frequently pressed
-together with mods (e.g., numbers, function keys, etc.) are on the Raise layer
-activated by the right thumb.
-
-* Every key on a TKL has a binding.
-
-* Backspace is bound in the same place on every layer to avoid having to let go
-of layer-shift keys to fix a mistake.
-
-* Likewise, the comma and period keys are not rebound on the raise layer to
-allow typing numbers with thousand separators and decimal points without
-releasing the layer key.
-
-* Brackets and braces are on or near the home row for quick access when coding.
-They're positioned below the parens on the Raise layer for easy recall.
-
-* For consistency, mods aren't rebound on layers (except for the Tab key).
+* The extra thumb keys are used for dedicated Ctrl/Menu keys (not super useful)
+and browser back/forward navigation keys (actually more useful than expected).
 
 ## Default layer