Frontend settings divided into pages:
Listings on index and types pages may be configured by types, this means that admin choose one of available views for each listings type separately. On other pages listings types may be mixed.
These views may be customized in smarty templates: 'frontend/listings/listing_semitable.tpl', 'frontend/listings/listing_full.tpl' and 'frontend/listings/listing_short.tpl'. Also 'frontend/listings/listing_quicklist.tpl' view template for listings blocks at quicklist page.
More information in Customization section 
For semitable views - for instance 3*2 means 3 columns and 2 rows, for full and short views - enter the number of listings on page.
Also ascending and descending order direction option available. For index and types pages you may control wich levels will be visible.