Multinomial Logit Choice Model in R with mnlogit() -

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I have a question about the R mnlogit package that I ask on stacks overflow because It is related to a specific language and library, although I would not be offended if someone decides to move it to cross-validated (it was a difficult option for which the StackExchange site was most appropriate).

I'm just trying to make sure that I understand how it works, because the documentation is not very wide, I could see some confusing / contradictory blog entries in this package. , And since I work with the model I prefer. >

Example usage mnlogit is basically as follows: 

  & gt; Required (mnlogit) & gt; Data (fish) & gt; Head (fish) mode income alt price cat irritation 1.bitch fails 7083.332 between 157.930 0 0.0678 1 1. boat failure 7083.332 boat 157.930 0.2601 1 1. Chatter TRUE 7083.332 charter 182.930 0.5391 1 1.Pear failure 7083.332 PIR 157.930 0.0503 1 2. Beach False 1250.000 Beach 15.114 0.1049 2 2. False False 1250.000 Boat 10.534 0.1574 2 & gt; FM & LT; - formula (mode ~ value | income | hold) & gt; Result>   
 The way to mislead me is  mode  and  alt . I would have thought that the dependent variable would be multiple choice, which appears to be  alt  (beach, boat, charter, or ghat).  
 Instead, this is the logical variable,  mode . What is  mode ?  
 To try to understand me, I read one on this subject. This really confuses things by repeating the example  fish , but with the introduction describing the dataset in this way:  
 
 with a data frame: < Mode Setting: Beach, Ferries, Boat and Charter Price - The price of a mode for personal grip - Fishing rate for one mode for personal income - Personal decision maker's monthly Income - Decision Maker ID    < p> This describes  mode  as if it is  alt , then  alt . Can anyone explain this to me?  
 If the  mode  actually takes different options values ​​described in R-Blogger's article, then the model  formula (mode ~  is a logical variable) , So I am completely confused.   
 
 
 Oh, okay. I think now that I see -  mode  indicates that according to the characteristics of each option set, four possible options were chosen. This is understandable.

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