How to Make sap's online help (SAP Library) Effective

Online Help is unavailable for newly installed SAP Systems (unlike F1 help, F1 help is used to display the meaning of a field, the SAP Library application can help to display the operation content on the current page, such as the method and steps for creating material master data in mm01 ), the help-application help and help-SAP Library in the menu cannot open any help page. This is not because the sapgui installation is incomplete, but because the sap help system itself is not included in the GUI, but must be separately configured.
Use the transaction code sr13 to open the "change view" Management: Show SAP database "function. Four tabs are displayed:
 

What is the first dynamichelp "dynamic help "? I don't know what it is;
The second plainhtmlhttp is the "pure HTML web method", which is a way to access sap help through the Web server, such as connecting to the official sap network;
The third plainhtmlfile is a "pure HTML webpage File". It must be connected to the Help file in the webpage format stored on the local machine;
The fourth htmlhelpfile is the CMH help file, which is the offline help file of the SAP Library;
We usually use the second and fourth tools. If you have a ready-made offline help file, install or copy it first (the copy method may need to run mklnk in the Shortcut Folder first? I don't know if this is the function of creating a link.) I used 470 on the local hard disk, because I don't have 471 on hand, and I feel like I should be able to use it, later, we found that there was indeed no SAP Library of version 471.
If you do not have an offline help file, you can also use the second plainhtmlhttp to connect to the online help provided by the sap official website http://help.sap.com through the Internet.
Select plainhtmlhttp or htmlhelpfile as needed, and click "New entry". The content bar below will be filled in. Follow the rules below:
Variant platform area server names Path Language default
Plainhtmlhttp any wn32 iwbhelp help.sap.com sap official website en √
Htmlhelpfile any wn32 iwbhelp local hard drive path en √
The plainhtmlhttp path to your sap version, find in the http://help.sap.com, such as 4.71 path: saphelp_47x200/helpdata, 4.6c path: saphelp_46c/helpdata, ecc5.0 path: saphelp_erp2004/helpdata
Save the settings.
Click "Help-application help" in the menu to go to the Help page for the current operation. Click "Help-SAP database" to link to the homepage of SAP Library.