You can make SAP keywords to be keyed in upper-case characters and Variable names and Forms can be typed in Lower case characters by a single click of button. This will make your code more readable and presentable.
Make the following settings: SE38->Utilities->Settings->ABAP Editor->Pretty Printer. Check the two boxes: Indent, Convert Upper/Lower case (Key word Upper case). This User Specific setting needs to be maintained only once. Now every time you finish writing your code in ABAP editor, click on the Pretty Printer Tab on the application tool bar to find the above.