You can do this in SCI Companion. It's a bit flaky, but you need to select all pic commands, cut (ctrl-x), then paste (ctrl-v). Then, there are some hot keys for manipulating the pasted commands. Looks like numpad 2 and 8 flip horizontally. I think there used to be a bug where the result was off by one, I forget if it's fixed in the official version of SCI Companion, or what. After you're done moving/modifying the pasted commands, double click on the selection rect in the pic view area and to commit the commands.
switch (nChar)
{
case VK_RIGHT:
{
_cxPastedScale++;
break;
}
case VK_LEFT:
{
_cxPastedScale--;
break;
}
case VK_UP:
{
_cyPastedScale--;
break;
}
case VK_DOWN:
{
_cyPastedScale++;
break;
}
case VK_NUMPAD4:
case VK_NUMPAD6:
_fVFlip = !_fVFlip;
break;
case VK_NUMPAD8:
case VK_NUMPAD2:
_fHFlip = !_fHFlip;
break;
case VK_NUMPAD7:
_iAngle -= 5;
break;
case VK_NUMPAD9:
_iAngle += 5;
break;