Add note for L/R side bit being ignored

tanant · tanant · commit da03c50449d0 · 2016-12-04T16:46:43.000+11:00
diff --git a/doc/keymap.md b/doc/keymap.md
@@ -569,6 +569,7 @@ This registers modifier key(s) simultaneously with layer switching.
 
     ACTION_LAYER_MODS(2, MOD_LSFT | MOD_LALT)
 
+This function can only register left-sided modifiers. The handedness of the modifier (left/right) is an extra bit that is not able to be passed through into the layer system. See: [`common/action_code.h`](../common/action_code.h), the spec for ACT_LAYER_TAP only allows four bits for the mods, whereas the mods themselves require five bits, with the high bit being the left/right handedness.
 
 
 ## 4. Tapping

Original file line number	Diff line number	Diff line change
`@@ -569,6 +569,7 @@ This registers modifier key(s) simultaneously with layer switching.`
`569`	`569`
`570`	`570`	`ACTION_LAYER_MODS(2, MOD_LSFT \| MOD_LALT)`
`571`	`571`
	`572`	+This function can only register left-sided modifiers. The handedness of the modifier (left/right) is an extra bit that is not able to be passed through into the layer system. See: [`common/action_code.h`](../common/action_code.h), the spec for ACT_LAYER_TAP only allows four bits for the mods, whereas the mods themselves require five bits, with the high bit being the left/right handedness.
`572`	`573`
`573`	`574`
`574`	`575`	`## 4. Tapping`