Edited text for clarity, readability per @zimeon 📝

Author: triplingual

recipe/0560-resources-on-a-timeline/index.md

@@ -19,7 +19,7 @@ This recipe is very similar to [Composition from Multiple Images][0036], which d
 
 If a Canvas has a `duration` property, viewers have to process it, and can be helpful by providing an interactive means of displaying that Canvas for the value of the `duration`. To give a viewer instructions on showing a resource during all or part of that duration, the Canvas can use a media fragment on its `target` value, in the form `#t=`. For details on formats and semantics of this media fragment, see the [W3C Media Fragments section on Temporal Dimension](https://www.w3.org/TR/media-frags/#naming-time). Note that while the Media Fragments specification allows for values other than numbers of seconds, IIIF conventionally uses only whole and/or partial seconds. Fragment values can be individually or in the aggregate greater than the `duration` value. See [Rendering Multiple Media Types on a Time-Based Canvas][0489] for a brief explanation of the `timeMode` property and for more on the "t" parameter on a `target`.
 
-Nothing in the Presentation API 3.0 says anything explicitly about a viewer initiating play upon loading a Canvas with a `duration` property, even with a`start` value. In addition, for browser-based viewers, people may configure their browsers to disable autoplay. Consequently, manifest creators should not assume a resource with `duration` will begin without interaction.
+The Presentation API 3.0 is not explicit about whether a viewer should initiate play upon loading a Canvas with a `duration` property, even with a `start` value. In addition, for browser-based viewers, people may configure their browsers to disable autoplay. Consequently, manifest creators should not assume a resource with `duration` will begin without interaction.
 
 Once the timeline has started, the default action in IIIF is to display a Canvas for the `duration` value and stop, regardless of the individual or aggregate "t" parameter values on the `target`s of the Canvas's descendent `items`. To get the annotation sequence to repeat, the `behavior` value is set to `repeat`. This value is applicable only on Collections or Manifests containing Canvases with `duration`. Once the end of the `duration` (the end of the timeline) is reached, this behavior tells the viewer to start over at the beginning. Note that there is no mechanism for repeating a fixed number of times.