You might have noticed the complete lack of social niceties like "please" in Informix documentation. Occasionally, I do get messages to review from developers that say things like "Please read the Guide to SQL: Syntax for information on the syntax." Or even better: "Please contact IBM Software Support." I have to take out the "please" because it is against IBM style guidelines.
The official IBM Style guideline on "please" instructs us not to use "please" in IBM technical information: Terms of politeness are superfluous, convey the wrong tone for technical material, and are not regarded the same way in all cultures.
In some cultures, when you use a word like "please," it indicates that the action mentioned is optional. We have to take into account that our documentation will be translated and also that it will be read in English by people whose first language is not English.
So you see, we are not being rude--just authoritative!