lock(Mutex &)
 Locks a recursive mutex

resetiosflags(long)
 Clears, in the stream  (istream or ostream), the format bits
 denoted by the argument.

setfill(int)
 Sets the fill character (istream or ostream) to be the value
 specified by the argument.

setiosflags(long)
 Turns on, in the stream  (istream or ostream), the format bits
 denoted by the argument.

setprecision(int)
 Sets the precision (istream or ostream) to be the value specified
 by the argument.

setw(int w)
 Sets the field width of the stream (left-hand operand: ostream
 or istream) to the value specified by the argument.

unlock(Mutex &)
 unlocks a recursive mutex