Tightened the source code and README documentations in the library.

Sources/PlaydateKit/Sound/Signal/Classes/ControlSignal.swift

@@ -1,8 +1,7 @@
 internal import CPlaydate
 
 extension Sound {
-    /// A signal whose values are set on a sequence timeline. Wraps
-    /// `ControlSignal`.
+    /// Values set at sequence steps, for automating parameters. Wraps `ControlSignal`.
     public final class ControlSignal: SignalValue {
         private static var api: UnsafePointer<playdate_control_signal> { Playdate.controlSignalAPI.unsafelyUnwrapped }
 
@@ -21,24 +20,21 @@ extension Sound {
             }
         }
 
-        /// Removes all events from the signal's timeline.
         public func clearEvents() {
             ControlSignal.api.pointee.clearEvents.unsafelyUnwrapped(pointer)
         }
 
-        /// Adds a value at `step` in the signal's timeline. If `interpolate`
-        /// is `true`, the value ramps from the previous event.
+        /// If `interpolate`, ramps to `value` from the previous event.
         public func addEvent(step: Int, value: Float, interpolate: Bool = false) {
             ControlSignal.api.pointee.addEvent.unsafelyUnwrapped(pointer, Int32(step), value,
                                                          interpolate ? 1 : 0)
         }
 
-        /// Removes the event at `step`, if any.
         public func removeEvent(step: Int) {
             ControlSignal.api.pointee.removeEvent.unsafelyUnwrapped(pointer, Int32(step))
         }
 
-        /// The MIDI controller number for signals loaded from a MIDI file.
+        /// For signals created by `Sequence.loadMIDIFile(path:)`.
         public var midiControllerNumber: Int {
             Int(ControlSignal.api.pointee.getMIDIControllerNumber.unsafelyUnwrapped(pointer))
         }