diff --git a/python/IPO/README b/python/IPO/README old mode 100755 new mode 100644 diff --git a/python/IPO/board.py b/python/IPO/board.py old mode 100755 new mode 100644 diff --git a/python/IPO/receive.py b/python/IPO/receive.py old mode 100755 new mode 100644 diff --git a/python/IPO/say.py b/python/IPO/say.py old mode 100755 new mode 100644 diff --git a/python/IPO/send.py b/python/IPO/send.py old mode 100755 new mode 100644