Minor rename

diff --git a/src/DiamondArrow.cpp b/src/DiamondArrow.cpp
index a94f488..2335192 100644
--- a/src/DiamondArrow.cpp
+++ b/src/DiamondArrow.cpp
@@ -16,8 +16,8 @@

 #include "wx/wxsf/DiamondArrow.h"

-// arrow shape
-static const wxRealPoint arrow[4]={wxRealPoint(0,0), wxRealPoint(10,4), wxRealPoint(20,0), wxRealPoint(10,-4)};
+// diamond arrow shape
+static const wxRealPoint diamondArrow[4]={wxRealPoint(0,0), wxRealPoint(10,4), wxRealPoint(20,0), wxRealPoint(10,-4)};

 XS_IMPLEMENT_CLONABLE_CLASS(wxSFDiamondArrow, wxSFSolidArrow);

@@ -48,7 +48,7 @@ void wxSFDiamondArrow::Draw(const wxRealPoint &from, const wxRealPoint &to, wxDC
 {
    wxPoint rarrow[4];

-   TranslateArrow( rarrow, arrow, 4, from, to );
+   TranslateArrow( rarrow, diamondArrow, 4, from, to );

    dc.SetPen(m_Pen);
     dc.SetBrush(m_Fill);
diff --git a/src/OpenArrow.cpp b/src/OpenArrow.cpp
index c72616e..eecbbe4 100644
--- a/src/OpenArrow.cpp
+++ b/src/OpenArrow.cpp
@@ -17,8 +17,8 @@
 #include "wx/wxsf/OpenArrow.h"
 #include "wx/wxsf/CommonFcn.h"

-// arrow shape
-static const wxRealPoint arrow[3]={wxRealPoint(0,0), wxRealPoint(10,4), wxRealPoint(10,-4)};
+// open arrow shape
+static const wxRealPoint openArrow[3]={wxRealPoint(0,0), wxRealPoint(10,4), wxRealPoint(10,-4)};

 using namespace wxSFCommonFcn;

@@ -60,7 +60,7 @@ void wxSFOpenArrow::Draw(const wxRealPoint &from, const wxRealPoint &to, wxDC& d
 {
    wxPoint rarrow[3];

-   TranslateArrow( rarrow, arrow, 3, from, to );
+   TranslateArrow( rarrow, openArrow, 3, from, to );

    dc.SetPen( m_Pen );
    dc.DrawLine(rarrow[0], rarrow[1]);
diff --git a/src/SolidArrow.cpp b/src/SolidArrow.cpp
index c5ae95b..a0cbb77 100644
--- a/src/SolidArrow.cpp
+++ b/src/SolidArrow.cpp
@@ -17,8 +17,8 @@
 #include "wx/wxsf/SolidArrow.h"
 #include "wx/wxsf/CommonFcn.h"

-// arrow shape
-static const wxRealPoint arrow[3]={wxRealPoint(0,0), wxRealPoint(10,4), wxRealPoint(10,-4)};
+// solid arrow shape
+static const wxRealPoint solidArrow[3]={wxRealPoint(0,0), wxRealPoint(10,4), wxRealPoint(10,-4)};

 using namespace wxSFCommonFcn;

@@ -69,7 +69,7 @@ void wxSFSolidArrow::Draw(const wxRealPoint &from, const wxRealPoint &to, wxDC&
 {
    wxPoint rarrow[3];

-   TranslateArrow( rarrow, arrow, 3, from, to );
+   TranslateArrow( rarrow, solidArrow, 3, from, to );

    dc.SetPen(m_Pen);
     dc.SetBrush(m_Fill);