#include <sstream>
-using std::abs;
using std::ostringstream;
using std::string;
// between lengths and font sizes on the screen
// is the same as on paper.
-#ifdef WITH_WARNINGS
-#warning if you don't care than either call this function differently or let it return negative values and call abs() explicitly when needed (Andre')
-#endif
-
double result = 0.0;
switch (unit_) {