"    Input:  {
              (original_input)    - original (high-level) input from web to check keys

              (search_module_uoa) - module instead of experiment
              (search_repo_uoa)   - repo to prune experiments
              (search_repos)      - list of repos to prune search
              (tags)              - tags to prune experiments
                 or
              (lst)               - use list if already prepared (for example for second level pruning)

              (skip_meta_key)     - if 'yes', do not use 'meta' key in list

              (selector)          - dict with selector

              (crowd_key)         - extend selector keys if called from crowd-tuning
              (crowd_on_change)   - use on_change if called from crowd-tuning

              (url1)              - URL with all prefixes to create on change
              (form_name)         - form name
              (skip_form_init)    - if 'yes', skip form init (second level pruning)
              (add_reset)         - if 'yes', add reset button

              (background_div)    - if !='' use this as background div

              (keep_empty)        - if 'yes', keep empty values
              (add_info)          - if 'yes', add info during search (for data_name)
            }

    Output: {
              return       - return code =  0, if successful
                                         >  0, if error
              (error)      - error text if return > 0

              html
              choices
              wchoices
              mchoices
            }

"