Hi Elias,
Like I said, in the absence of a Sequence command, the trials are run in the order in which they are defined. Most projects use a single .js script file, so that would mean that in the absence of a Sequence command, the trial would be run in the top-down order in which they appear in that single script file. In your case, you happen to have more than one .js script file, but that’s orthogonal to including HTML content in your trials
The next page of the advanced tutorial which I linked to in my previous message, titled Collecting participant information, illustrates how to inject the content of an HTML file from your project’s Resources folder into a newTrial. Then you simply use the Sequence command to control the order in which you trials are run
Jeremy