What is the difference between hard return and soft return? A hard return is when the user hits the return or enter key to bring subsequent text onto a new line. If you keep typing until the text reaches the end of the line and it star â¦ ts on a new line itself automatically, that is a soft return.
Definition of litmus. 1  1 : a coloring matter from lichens that turns red in acid solutions and blue in alkaline solutions and is used as an acid-base indicator. 2  2 : the critical factor in a litmus test; also : litmus test.
litÂ·mus. A colored powder, obtained from certain lichens, that changes to red in an acid solution and to blue in an alkaline solution. â¦ Litmus is typically added to paper to make litmus paper, which is used to determine whether a solution is basic or acidic.