Siemens SIMATIC S5 - Meaning of the Function Keys

Meaning of the function keys
Insert a statement
Erase
a statement
3egin inputting
Insert network
I
Erase network
I
Signal status display
l
I
Erasing the Input field
statement+l Transfer key 1
Ending inputting
statement-l
of a statement
Network+l
Overwriting of
a statement
Network-l