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.
Watercolor paper differs from manufacturer to manufacturer, so experiment not only with the different kinds of paper but also with various brands of paper. Watercolor paper is usually white, but it need not be. A variety of cool and warm tints is available. Use acid-free paper for paintings you wish to keep as this will yellow less with age.