public static System.Collections.Generic.IEnumerable<System.String> ReadWord( System.String input ) {
			input ??= System.String.Empty;

			var inlen = input.Length;
			System.Int32 start = 0;
			System.Int32 stop;
			do {
				while ( ( start < inlen ) && System.Char.IsWhiteSpace( input[ start ] ) ) {
					start++;
				}
				if ( start == inlen ) {
					throw new System.ApplicationException();
				} else if ( '(' == input[ start ] ) {
					stop = ReadString( input, start );
				} else {
					stop = ReadWord( input, start );
				}
				if ( start == stop ) {
					yield break;
				} else {
					yield return input.Substring( start, stop - start );
				}
				start = stop;
			} while ( start < inlen );

			yield break;
		}
		private static System.Int32 ReadWord( System.String input, System.Int32 pos ) {
			var inlen = input.Length;
			while ( ( pos < inlen ) && !System.Char.IsWhiteSpace( input[ pos ] ) ) {
				pos++;
			}
			return pos;
		}
		private static System.Int32 ReadString( System.String input, System.Int32 pos ) {
			var inlen = input.Length;
			while ( ( pos < inlen ) && ( ')' != input[ pos ] ) ) {
				if ( '\\' == input[ pos ] ) {
					pos++;
				}
				pos++;
			}
			return ++pos;
		}