Decals are any effects added to the walls and ground of map as a result of gameplay: blood, graffitis, etc. This bind will instantly clear all decals when you press the SHIFT key. This is useful as it will make things easier to see - for example, often blood on walls makes it harder to see enemies who are peeking in front of it.
Below is the basic/most common variation of the clear decals bind. It will clear decals (blood, bullet holes, etc) when the M key is pressed. Press the "Change Key" button to bind this to a different key. Copy and paste the command into your developer console or autoexec to apply the bind.
Currently bound to: M
This bind is very simple. The "r_cleardecals" command will remove all decals (blood, bullet holes, etc) from the map. The "bind m" part of this command tells the game to bind whatever is next to the m key, which is "r_cleardecals" (so decals are cleared when m is pressed).
Find different variations of this bind below.
If you'd like to clear decals whenever you shift, this bind will do that. Note that sometimes decals like blood and bullet holes can be useful indicators of whether or not an enemy has been in an area, so we recommend using the main bind. Copy and paste the below console command into your developer console or autoexec to apply it to your game.
This command will bind your WASD keys to the clear decals command so that your decals are cleared whenever you move your character.