Am I the only one who bought this DLC package? Alright, then, I'll just talk to myself for a bit.
I sent my questions to DTG's support site and, as usual, received a quick acknowledgement followed by a helpful reply, which came from a Mr. Stephen Jones, who included a link to an RSC video that demonstrates some of this engines features:
https://youtu.be/5Rrieaz17kU?t=287 . After watching that a couple of times, I wrote a Free-Roam scenario to allow myself to operate the Db BR261 without any pressure. So, now I'm at work on a supplemental guide to driving this engine. This is firstly for myself, to remind me how to drive it after not having done so for a while, but if anyone else is interested, I'll post it here, as well.
Some of the features not described in the far too terse manual include working window blinds and shades, opening windows (the video's narrator refers to such stuff as "twiddly-bits".

There are also two operational driver positions and functional switches that control such things as head/tail light configurations and gear ratios. Of course, you have to take your eye off the rails to operate these gadgets, but how much does an occasional crash matter as long as it's virtual?
