The "Home" and "End" equivalent

In Microsoft Word, the "Home" button brings you to the beginning of the line and the "End" button brings you to the end of the line. In iWorks and most Apple programs, these shortcuts don't work. A much better and cleverer shortcut does the same thing however. The "Command - left arrow" brings the cursor at the beginning of the line and the "Command - right arrow" to the end. There are however two more shorcut with the Apple programs. "Command - up arrow" brings the cursor to the beginning of the document and "Command - down arrow" brings the cursor at the end of the document.