using Protect end protect avoid the page break

Sap script using Protect end protect avoid the page break.

it is use /: protect

          /: text
          /: endprotect

Protect / endprotect is used in scenarios where data of a
business entity to be displayed in one page when the data
partially spills over to next page

we look into the list of incorrect session and process it 
again.to correct incorrect session we analyze the session 
to determine which screen and value produced the error.for 
small errors in data we correct them interactively 
otherwise modify batch input program that has generated the 
session or many times even the datafile.

open sql is not confined to any particular type of database 
while a native sql is confined to a particular one.

native sql : are not checked and converted they are sent 
directly to the database system.allows to use database 
specific sqql statements in an abap program.

Open sql: it will work on any r/3 system regardless of the 
database system in use.

Open SQL allows you to access all database tables known to 
the SAP system, regardless of the database manufacturer. 
Sometimes, however, we may want to use database-specific 
SQL statements called Native SQL in your ABAP/4 program. To 
avoid incompatibilities between different database tables 
and also to make ABAP/4 programs independent of the 
database system in use, SAP has created a set of separate 
SQL statements called Open SQL.