Please capitalize where necessary: they normally use less common names and have probably obtained these from the telephone directory or similar sources.
A: They normally use less common names and have probably obtained these from the telephone directory or similar sources.

Q: the distribution has now adopted an open development model, which carries out its development at the openrays community site.

A: The distribution has now adopted an open development model, which carries out its development at the OpenRAYS community site.

Q: convenient cutting of nym cables up to 5 x 2.5 mm
A: convenient cutting of NYM cables up to 5 x 2.5 mm

Problem: the diesel engine is today the totally dominating power source in heavy commercial vehicles.
Can you repeat this sentence, but capitalize it?
Answer: The diesel engine is today the totally dominating power source in heavy commercial vehicles.

Text: however, they may perceive things now hidden from me, and, above all, they will find that it was all necessary to the state of affairs in which they find themselves (and that, in the case of historians, is usually a comfortable one).

Correct capitalization: However, they may perceive things now hidden from me, and, above all, they will find that it was all necessary to the state of affairs in which they find themselves (and that, in the case of historians, is usually a comfortable one).

Text: the middle deck: please click here for bigger view...

Correct capitalization:
The middle deck: please click here for bigger view...