With just a few keystrokes, including a bit of "glue", you can use the command line to combine the finite set of UNIX utilities into innumerable, impromptu data transforms.

The "glue code" we need to write for Form1 is just a line in the message handler to request the business layer execute the appropriate logic.

The texture of piano key on the wall is formed by different colors and different face bricks, and arranges by a certain proportion and is carved out by different glue line.