back-end - access to :mode attribute for section and symbol-name

[Garulfo]

    Hi all,
      
      I try to learn how to start a new back-end for ConTeXt
        (https://wiki.contextgarden.net). 
        There is already a version based on ox-latex.el
        (https://github.com/Jason-S-Ross/ox-context/)
        but in order to contribute I wanted to learn the basics.
        
        I started a first elisp script (attached).
        
        For "ox-mycontext-section", I try to access the attribute
        ":mode" of the section
        in order to make the difference between "first-section" and
        "section".
        
        I had to use "symbol-name"
        :
      
           (let*
              ((section_mode (symbol-name (org-element-property :mode
        section))))
      
        Questions :  
        1/ Is it the "org-mode" way to do ?
        2/ What should I read to understand why "symbol-name"
        is needed, whereas usually "org-element-property"
        just return the appropriate string.
        
        
      Thanks

orgmode_export_backend_for_conTeXt_trial_v01.el
Description: Text document