# TopsyTurvy `TopsyTurvy` is a plugin that inverts the behaviour of the `Shift` key for some selected keys. That is, if configured so, it will input `!` when pressing the `1` key without `Shift`, but with the modifier pressed, it will input the original `1` symbol. ## Using the plugin To use the plugin, one needs to include the header, mark keys to apply plugin effects to, and use the plugin: ```c++ #include <Kaleidoscope.h> #include <Kaleidoscope-TopsyTurvy.h> // In the keymap: TOPSY(1), TOPSY(2), TOPSY(3) KALEIDOSCOPE_INIT_PLUGINS(TopsyTurvy); void setup () { Kaleidoscope.setup (); } ``` ## Keymap markup There is only one macro that the plugin provides, which one can use in keymap definitions: ### `TOPSY(key)` > Mark the specified `key` (without the `Key_` prefix!) for TopsyTurvy, and swap > the effect of `Shift` when the key is used. One can have any number of > topsy-turvy keys on a keymap. > > The keys must be plain old keys, modifiers or anything other augmentation > cannot be applied. The plugin provides a number of macros one can use in keymap definitions: ## Plugin methods The plugin provides the `TopsyTurvy` object, without any public methods or properties. ## Further reading Starting from the [example][plugin:example] is the recommended way of getting started with the plugin. [plugin:example]: /examples/Keystrokes/TopsyTurvy/TopsyTurvy.ino