Complex sentence: In most text processing programs and edit controls triple-clicking with the primary mouse button (the left button for right-handers) ont he text selects the entire line.if the edit control is not multiline, the entire text is selected.
Split into simpler sentences: In most text processing programs and edit controls triple-clicking with the primary mouse button (the left button for right-handers) on the text selects the entire line. If the edit control is not multiline, the entire text is selected.