Worzel, I don't mean to be rude when I say the following - its just that you keep repeating the same grammatical errors and some may think less of you because of them, which wouldn't be at all nice for you.
There is no apostrophe needed when you are referring to multiple Barco projection cubes. Apostrophes are used to indicate the possessive - i.e. belonging to. Using an S to show the plural of an object does not require one.
The word Barco is a brand name - not an acronym but a proper noun. It needs only one upper case letter, and that should go at the start of the word.
"Barcos" is the correct way to write it.
It's also recommended that when you start a sentence, ideally it shouldn't be started with the word 'using'. Just thought I'd point out one of your errors.
If prescriptivism is the order of the day, you are not only wrong, but your response contains further errors.
It is perfectly acceptable to begin a sentence with a gerund.
Firstly, your first sentence is badly constructed; the repetition of the the idea of starting a sentence should be reduced to one instance.
Secondly, your lack of subject at the start of your second sentence is erroneous.
Thirdly, you should use "that" after "thought" in your second sentence, as it does not accurately describe your notion that your though led to your action.
Here is an example of how you could have written it:
"It's also recommended that a sentence shouldn't be started with "using". I just thought that I'd point out one of your errors."
However, this is a forum that exists in reality, and to "correct" somebody when what they have chosen to say is in a register that may differ from what some perceive as "correct", is wrong.
For Gavin to offer you advice on how to express yourself clearly, and to prevent derision from other members, is merely that: advice.
