Whether the identifier denotes an object of user-defined type or a type derived from a user-defined type. Whether the identifier denotes a function or a type derived from a function. The number of arguments to a function. The dollar sign is also a valid identifier in Visual C++.
Known to ancient Egyptians, watercolor painting is one of the oldest art forms. Artists from medieval times used watercolors for the illumination of parchment papers, but during the 16th, 17th and 18th centuries, watercolors were restricted to miniature paintings on card, ivory, parchment or porcelain.
All you really need to begin is paint, water, and a brush. It is really that simple. Whether you choose to use watercolor as your primary artistic medium, or whether you use it primarily as studies for oil or acrylic paintings, the rewards of this challenging and somewhat unpredictable medium are great.