Mesh Generation
Example 6.5
Number of Nodes per Element <3 or 4>
  3
BLOCK DATA 
#S-Spans(NS)  #W-Spans(NW)  #PairsOfEdgesMergedNSJ)
  1             4             0
SPAN DATA
S-Span#  Num-Divisions  (for each S-Span/ Single division = 1)
  1        3
W-Span#  Num-Divisions  (for each W-Span/ Single division = 1)
  1        2
  2        2
  3        2
  4        2
BLOCK MATERIAL DATA (for Material Number other than 1)
Block#   Material  (Void => 0   Block# = 0 completes this data)
  0
BLOCK CORNER DATA
Corner#  X-Coord   Y-Coord (Corner# = 0 completes this data)
  1      0         4
  2      0         0
  3      1.4142    4.5858
  4      5         0
  5      2         6
  6      5         6
  7      1.4142    7.4142
  8      5         12
  9      0         8
  10     0         12
  0
MID POINT DATA FOR CURVED OR GRADED SIDES
S-Side#  X-Coord   Y-Coord (Side# = 0 completes this data)
  0
W-Side#  X-Coord   Y-Coord (Side# = 0 completes this data)
  1      0.7654    4.1522
  3      1.8478    5.2346
  5      1.8478    6.7654
  7      0.7654    7.8478
  0
MERGING SIDES (Node1 is the lower number)
Pair#  Side1Node1  Side1Node2   Side2Node1  Side2node2