// GtkScintillaEdgeMode
@define(  "SCINTILLA_EDGE_NONE"         ,   0 );
@define(  "SCINTILLA_EDGE_LINE"         ,   1 );
@define(  "SCINTILLA_EDGE_BACKGROUND"   ,   2 );

// changing the edge mode...
$scintilla->set_edge_mode(SCINTILLA_EDGE_NONE);