Modify Symmetry Code

This function allows a symmetrical panel ("SBP panel") to be split into one version valid Portside and one valid Starboard (SB) side. The vast majority of panels are truly divided and stored where valid. For example, an SB panel will normally be stored on SB and its definition data look as if it is described where stored and valid.

If the function fails to divide the panel, a simple solution will be used where only the symmetry of the panels are set that means, for the SB version the panel will still be defined on portside but be valid on starboard.

The new panels will get the original panel name with an S and P added at the end.

To invoke the "true" splitting to be activated, the environment variable SBH_MOD_SYM must be set to MIRR.