ClosedBit error docs

CB_ERR_UNKNOWN_KEY

Unknown keyboard key. Input code named a key the runtime does not recognize.

Why it happens

Input code named a key the runtime does not recognize.

How to fix it

Use key names such as Left, Right, Space, A, D, W, S, or Escape.

Copy-paste fix pattern
library CB-Input

fn main() {
    init_window(320, 180, "Input")
    if (is_key_down("Space")) {
        println("jump")
    }
}
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