What does the code mean?

[Chang Suk Chung]

class CSignalMA : public CExpertSignal
  {
protected:
   CiMA              m_ma;             // object-indicator
   //--- adjusted parameters
   int               m_ma_period;      // the "period of averaging" parameter of the indicator
   int               m_ma_shift;       // the "time shift" parameter of the indicator
   ENUM_MA_METHOD    m_ma_method;      // the "method of averaging" parameter of the indicator
   ENUM_APPLIED_PRICE m_ma_applied;    // the "object of averaging" parameter of the indicator
   //--- "weights" of market models (0-100)
   int               m_pattern_0;      // model 0 "price is on the necessary side from the indicator"
   int               m_pattern_1;      // model 1 "price crossed the indicator with opposite direction"
   int               m_pattern_2;      // model 2 "price crossed the indicator with the same direction"
   int               m_pattern_3;      // model 3 "piercing"

 

Above is the code of CSignalMA.

What does it mean, m of 'm_ma_period'?

I can't imagine.  

Please let me know.