Cisco ASA Static NAT Configuration

hi Rene Thanks for the reply
i got most of it ,Actually my confusion started by reading the following configuration from cisco. For last if you can explain short and simple on waht is REAL_ifc and MAPPED_ifc from the below example this will make it crystal clear

Thanks in Advance
nat (real_ifc,mapped_ifc) dynamic mapped_obj [interface] [dns]

Example:
hostname (config-network-object)# nat (inside,outside) dynamic MAPPED_IPS interface
Configures dynamic NAT for the object IP addresses. See the following guidelines:

***Interfaces —If you do not specify the real and mapped interfaces, all interfaces are used. You can also specify the keyword any for one or both of the interfac