I agree that the manual is not perfect, but compared to many software out there I'd actually call it excelent.
Especially for such a complex software with so many features as Limesurvey. I haven't seen Surveymonkey working for a long time. But last time it did not even have half of the features of Limesurvey. I assume this has changed since then.
Problem of the manual is, that it is a wiki and while this helps for the community to help, of course it is not comparable to a manual which was written by a professional in a professional and consistent way. You can see this with translations. There are different translations for the same thing. For Brazilian Portuguese me and Mauricio did some effort to align at least the most important words to keep them consistent (e.g. "questão" vs "pergunta" for question and similiar things). I can only imagine that there are many inconsistencies in other languages as well, due to many people work on it. It is just natural. And one translation might not be wrong/better than the other, but it is weird when you have two different words for the same thing. People will wonder what the difference is and if there is any.
Especially for such a complex software with so many features as Limesurvey. I haven't seen Surveymonkey working for a long time. But last time it did not even have half of the features of Limesurvey. I assume this has changed since then.
Problem of the manual is, that it is a wiki and while this helps for the community to help, of course it is not comparable to a manual which was written by a professional in a professional and consistent way. You can see this with translations. There are different translations for the same thing. For Brazilian Portuguese me and Mauricio did some effort to align at least the most important words to keep them consistent (e.g. "questão" vs "pergunta" for question and similiar things). I can only imagine that there are many inconsistencies in other languages as well, due to many people work on it. It is just natural. And one translation might not be wrong/better than the other, but it is weird when you have two different words for the same thing. People will wonder what the difference is and if there is any.