Adding an informative comment about interactions between the mx command and the pulse table.

Author: ematsakCedrus

xid_device_driver/XIDDevice.cpp

@@ -1810,6 +1810,8 @@ void Cedrus::XIDDevice::ClearLines()
     m_linesState = 0;
 }
 
+// Note that mx and similar commands will fail to raise lines masked off by mt and mk calls
+// Lines can be reclaimed entirely by mc and selectively by mk calls, if necessary.
 void Cedrus::XIDDevice::SendPulse(unsigned int duration, unsigned int lines, unsigned int pulses, unsigned int ipi)
 {
     if (!m_config->IsXID2())

xid_device_driver/XIDDevice.h

@@ -208,6 +208,8 @@ namespace Cedrus
         void RaiseLines(unsigned int linesBitmask, bool leaveRemainingLines = false);
         void LowerLines(unsigned int linesBitmask, bool leaveRemainingLines = false);
         void ClearLines();
+        // Note that mx and similar commands will fail to raise lines masked off by mt and mk calls
+        // Lines can be reclaimed entirely by mc and selectively by mk calls, if necessary.
         void SendPulse(unsigned int duration, unsigned int lines, unsigned int pulses, unsigned int ipi); // mx
         bool ArePulsesBeingSent() const; // _mx