public:
XMLBuffer(long buf_size=0x1000, long max_size=LONG_MAX, int del=1);
XMLBuffer(long buf_size, char *buf, int del=0); // writing
public:
XMLBuffer(long buf_size=0x1000, long max_size=LONG_MAX, int del=1);
XMLBuffer(long buf_size, char *buf, int del=0); // writing