> What has to be defined by the parameter items within mme_explore_position_set 
> before calling the api function mme_explorer_info_get? 
> Should it be 1 all the time or the number of items read out using a bunch of 
> mme_explorer_info_get calls afterwards?

You should put the number of how many info_get() calls you will make. For example, if on your HMI you display 5 items 
(but plan on reading 10, say 5 extra to handle a page down) you should pass in items = 10. It is treated as a hint, it 
allows the MME to optimize things in some situations for better performance.

Regards,
Gilles