Log Message:
Update 3.3 to 3.4
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Version 3.4:
  I fixed a bug in the code that implements the modified GS (scaling)
card. In NEC2 the GS card scales all of the structure, but in Xnec2c I
modified the code so that it is possible to specify a range of tag
numbers to apply scaling to only. When a GS card follows a GX card,
selective scaling doesn't work correctly because a symmetric structure
is created. If you are using a GS card, it may be better to avoid
specifying a tag number range, just in case the bug fix is not
complete.