This function returns the name of a level given the level number (0-based).
Result = EOS_PT_GETLEVELNAME( pointID, level, levelname [, LENGTH=variable] )
Returns SUCCEED (0) if successful and FAIL (-1) otherwise.
Point id (long) returned by EOS_PT_CREATE or EOS_PT_ATTACH.
Point level (0-based long).
A named variable that will contain the level name (string).
Set this keyword to a named variable that will contain the string length of the level name.
In this example, we return the level name of the 0th level of the second point defined in the EOS_PT_DEFLEVEL section:
status = EOS_PT_GETLEVELNAME(pointID2, 0, levelname)