Use the keyboard layout that the active Slope build actually supports. Arrow keys and A/D are widely documented; some hosted versions also show alternate letter bindings for different keyboard layouts.
Why alternate bindings exist
Letter positions vary across QWERTY, AZERTY and other layouts. A binding that is comfortable on one keyboard may be awkward on another, which is why some browser portals document more than one left-right pair.
Verify instead of assuming
The safest procedure is simple: click the game frame, test the left key once and then the right key once. If the ball or menu responds correctly, keep that pair for the session. Do not infer support from a guide if the current client behaves differently.
Consistency matters more than the specific pair
Switching between arrows and letters changes hand position and can change how long you hold a key. When practicing steering precision, choose one working pair so the input method stays constant while you compare decisions.
Browser focus still applies
A correct binding cannot work if the iframe is not focused. If the page scrolls or a browser shortcut fires, solve focus first. Then return to key mapping only if the frame is definitely receiving input.
Apply Slope Keyboard Controls & Alternate Layouts in a normal run
Practice this topic as a sequence of observations, not as a demand to force the same steering on every generated track. For Slope Keyboard Controls & Alternate Layouts, keep the first visible principle in mind: Why alternate bindings exist. Then use verify instead of assuming as the second checkpoint, so the test covers both the initial choice and what follows from it.
Use the immediate feature as the trigger, but evaluate the line one feature later. This prevents a dramatic dodge from being counted as a success when it creates the next crash. The exercise works best when the page's cue can be seen in both the entry and the exit of the sequence.
Judge progress by repeatability. One successful pass proves only that the line was possible; several calmer exits show that the decision is becoming reliable. Once that reliability appears, return to normal score attempts and see whether the habit survives without conscious rehearsal.