日积月累
曾经迷恋于Delphi的优雅，但Borland已经离我很遥远了。
如日中天的Java，怎么混杂着数不清的括号、纠缠不清的Checked Exception和叫人不胜其烦的XML配置文件。
开发语言的新贵Ruby和Rails，会是Web快速开发领域的王冠吗?
稍嫌笨拙的ABAP，又是如何支撑起SAP这个巨型的企业应用系统?
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Fuction groups中TOP程序的数据为什么可以在不同的Function Module中共享？
2009-05-11
SAP的Online Help里面已经有了比较清楚的讲述，below are 2 key issues:
About the TOP program：This contains the FUNCTION-POOL statement (equivalent for a function group of the REPORT or PROGRAMstatement) and global data declarations for the entire function group.
What happens when you use "CALL FUNCTION" statement? When you run an ABAP program, the system starts a new internal session. The internal session has a memory area that contains the ABAP program and its associated data. When you call a function module, an instance of its function group plus its data, is loaded into the memory area of the internal session. An ABAP program can load several instances by calling function modules from different function groups.相关链接：
From Function Groups to Objects
随机文章：
关于ABAP中的Literal 2009-11-09关于DDIC_TYPE_INCONSISTENCY类DUMP的说明 2009-04-01考虑双字节的截取字符串处理 2008-12-24在ABAP程序中调用逻辑数据库 2008-12-13ECC6中报表传输后修改的选择屏幕不生效的解决方法 2008-12-02
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