# Overview
-When defining a [keymap](https://github.com/qmk/qmk_firmware/blob/master/docs/Keymap.md) each key needs a valid key definition.
+When defining a [keymap](Keymap.md) each key needs a valid key definition.
This page documents the symbols that correspond to keycodes that are available to you in QMK.
|Long Name|Short Name|Description|
|---------|----------|-----------|
|KC_PSCREEN|KC_PSCR|PrintScreen1|
-|KC_SCKLOCK|KC_SLCK|Scroll Lock11|
+|KC_SCROLLLOCK|KC_SLCK|Scroll Lock11|
|KC_PAUSE|KC_PAUS|Pause1|
|KC_INSERT|KC_INS|Insert1|
|KC_HOME||Home1|