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If Specify direction of periodicity is selected, select an option from the Direction of periodicity 1 (or 2) list: User defined (the default) or Parallel to reference edge. For User defined enter the components of the direction of periodicity Tp,1 or Tp,2 (dimensionless) directly. The defaults for Tp,1 and Tp,2 are the positive x-axis and positive y-axis respectively. For Parallel to reference edge, the Reference Edge Selection, Direction 1 and/or Reference Edge Selection, Direction 2 sections are shown. Select a single edge (for each direction), which must be adjacent to at least one boundary in the selection for the Cross Grating feature and not parallel to each other.
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If Specify direction of grating lines is selected, select an option from the Direction of grating lines 1 (or 2) list: User defined (the default) or Parallel to reference edge. For User defined enter the components of the direction of grating lines Tl,1 or Tl,2 (dimensionless) directly. The defaults for Tl,1 and Tl,2 are the positive y-axis and positive x-axis respectively. For Parallel to reference edge, the Reference Edge Selection, Direction 1 and/or Reference Edge Selection, Direction 2 sections are shown. Select a single edge (for each direction), which must be adjacent to at least one boundary in the selection for the Cross Grating feature and not parallel to each other.
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