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<TITLE>Sams Teach Yourself ABAP/4® in 21 Days -- Week 3 - At a Glance</TITLE>
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<H1 ALIGN="CENTER">Sams Teach Yourself ABAP/4<SUP>®</SUP> in 21 Days</H1>
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<H2>Week 3... At a Glance</H2>
<P>In Week 3, you produce reports that use graphical symbols and icons, attach headings
and footings to lists, and send output to the print spool using the <TT>new-page
print</TT> statement. Following that, you become familiar with the <TT>initialization</TT>,
<TT>start-of-selection</TT>, <TT>end-of-selection</TT>, <TT>top-of-page</TT>, and
<TT>end-of-page</TT> events. You also code internal and external subroutines and
function modules, and pass typed and untyped parameters to them by value, by value
and result, and by reference. Finally, you raise exceptions within function modules
to set the return value of <TT>sy-subrc</TT>, and create selection screens using
the <TT>select-options</TT> statement.
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<LI>In <A HREF="ch15.htm" tppabs="http://pbs.mcp.com/ebooks/0672312174/ch15/ch15.htm">Day 15</A>, "Formatting Techniques, Part 1,"
you use the graphical formatting options of the write statement (<TT>as symbol</TT>,
<TT>as icon</TT>, <TT>as line</TT>), print list output, and manipulate the output
on the spool.
<LI>During <A HREF="../ch16/ch16.htm" tppabs="http://pbs.mcp.com/ebooks/0672312174/ch16/ch16.htm">Day 16</A>, "Formatting Techniques, Part
2," you use the common formatting statements <TT>new-line</TT>, <TT>new-page</TT>,
<TT>skip</TT>, <TT>back</TT>, <TT>position</TT>, and <TT>set blank lines</TT>; and
send output to the spool using <TT>new-page print</TT>.
<LI>Within <A HREF="../ch17/ch17.htm" tppabs="http://pbs.mcp.com/ebooks/0672312174/ch17/ch17.htm">Day 17</A>, "Modularization: Events and
Subroutines," you use the events <TT>initialization</TT>, <TT>start-of-selection</TT>,
and <TT>end-of-selection</TT>; define internal and external subroutines; and define
global, local, and static variables and table work areas.
<LI>During <A HREF="../ch18/ch18.htm" tppabs="http://pbs.mcp.com/ebooks/0672312174/ch18/ch18.htm">Day 18</A>, "Modularization: Passing Parameters
to Subroutines," you pass typed and untyped parameters to subroutines; pass
parameters three ways: by reference, by value, and by value and result; and pass
field strings and internal tables to a subroutine.
<LI>During <A HREF="../ch19/ch19.htm" tppabs="http://pbs.mcp.com/ebooks/0672312174/ch19/ch19.htm">Day 19</A>, "Modularization: Function
Modules, Part 1," you understand and use the <TT>include</TT> statement, create
function groups and function modules, and define import, export, and changing parameters.
<LI>Within <A HREF="../ch20/ch20.htm" tppabs="http://pbs.mcp.com/ebooks/0672312174/ch20/ch20.htm">Day 20</A>, "Modularization: Function
Modules, Part 2," you understand the components and structure of a function
group, and define global data and subroutines within a function group.
<LI>In <A HREF="../ch21/ch21.htm" tppabs="http://pbs.mcp.com/ebooks/0672312174/ch21/ch21.htm">Day 21</A>, "Selection Screens," you
code selection screens that interact with the user, use formatting elements to create
efficient, well-designed selection screens, and use selection screens to maintain
data integrity.
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