• Max Rows—Sets the number of mesh or knot rows. Type a value greater than or equal to 4.

• Columns—Sets the number of mesh or knot columns. Type a value greater than or equal to 4.

• Degree Rows—Sets the row degree when Advanced Options is selected.

• Columns—Sets the column degree when Advanced Options is selected.

• Move—Constrains the movement of the mesh points:

◦ Normal—Moves all selected points along the point's surface normal direction.

◦ Normal Constant—Moves all selected points along a common surface normal direction defined by the active point.

◦ Normal to Plane—Moves points normal to the active datum plane.

◦ Free—Moves points in a plane parallel to the active datum plane.

◦ Along Bar (Alt+Shift)—Moves points along their adjoining row and column mesh.

◦ In View (Alt)—Moves points in a plane parallel to the current view plane.

• Filter—Constrains the movement of the selected points surrounding the active point.

• Adjust—Sets a value to nudge a mesh point. The default increment is 0.01.

• Comparison options—Compares the edited surface with the original surface by changing the display:

• Control point display

◦ List box—Shows a chronological list of the surface edit operations you performed on the selected surface.

◦ Advanced Options check box—Makes the knot tools available.

▪ Replace Base Surface—Makes the base knots editable and removes all other knots. Clears the Keep Base Surface check box.

▪ Rows per Knot—Sets the number of rows that use each knot.

▪ Columns per Knot—Sets the number of columns that use each knot.

▪ Rows—Sets the global surface continuity in the row direction. Type a value up to one less than the degree value set for rows.

▪ Columns—Sets the global surface continuity in the column direction. Type a value up to one less than the degree value set for columns.

◦ Keep Base Surface check box—Retains the original base knots after you edit the surface.

◦ Neighbor collector—Shows an edge or curve to which to align the child surface. You cannot select a composite curve.

▪ Details—Opens the Chain dialog box.

◦ Side collector—Shows a surface on one side of the neighbor edge when the edge or chain selection yields more than one parent option. Shows a planar surface or datum plane to define the normal direction when you select Align Normal or Align Normal Position as the constraint.

◦ Constraint box—Sets the continuity level of the aligned boundary.

◦ Merge Neighbor Knots check box—Merges the knots of the child surface with the adjacent parent surface’s knots.

◦ Replace—Replaces the child surface's base knots with the parent surface’s knots.

◦ Rows box—Sets the number of rows shown in the base surface point cloud. Ranges from 20 to 200.

◦ Columns box—Sets the number of columns shown in the base surface point cloud. Ranges from 20 to 200.

• Right-click the graphics window to access shortcut menu commands.

◦ Neighbor Collector—Activates the Neighbor collector on the Align tab.

◦ Side Collector—Activates the Side collector on the Align tab.

◦ Deactivate Collector—Deactivates the currently active collector.

◦ Clear—Clears the currently selected collector.

◦ Show Only——Hides the display of all the Style entities except the selected entities.

• Right-click control points that were moved during the current operation to access shortcut menu commands.

◦ Reset—Returns the selected points that were moved during the current operation back to their initial position.

◦ Reset All—Returns all the points that were moved during the current operation back to their initial position.

• Right-click a control row or column to access the shortcut menu commands.

◦ Planarize—Moves the points of the selected control row or column onto a plane that is the best fit between the start and endpoints and the internal points on the line.

• Right-click a surface mesh row to access shortcut menu commands.

◦ Deactivate Row—Deactivates the selected mesh row.

◦ Remove Row—Deletes the selected mesh row.

• Right-click a surface mesh column to access shortcut menu commands.

◦ Deactivate Column—Deactivates the selected mesh column.

◦ Remove Column—Deletes the selected mesh column.

• Right-click the surface you are editing to access shortcut menu commands.

◦ Add Row Knot—Adds a row knot to the surface mesh.

◦ Add Column Knot—Adds a column knot to the surface mesh.

◦ Clear All Boundaries—Clears all mesh boundary constraints for the surface.

◦ Normal—Moves all selected mesh points along the point's surface normal direction.

◦ Normal Constant—Moves all selected mesh points along a common surface normal direction defined by the active point.

◦ Normal to Plane—Moves mesh points normal to the active datum plane.

◦ Free—Moves mesh points in a plane parallel to the active datum plane.

◦ Along Bar (Alt+Shift)—Moves mesh points along their adjoining row and column mesh.

◦ In View (Alt)—Moves mesh points in a plane parallel to the current view plane.

◦ Activate All—Activates all deactivated rows or columns in the mesh.

• Right-click a boundary of the selected surface mesh to access shortcut menu commands.

◦ Preserve None—Does not constrain the selected surface mesh boundary. You can edit its control points. When you select this option, the following commands become available:

▪ Align Tangent—Sets the continuity level of the aligned boundary to tangent.

▪ Align Curvature—Sets the continuity level of the aligned boundary to curvature.

▪ Swap Ends—Switches the start and end points of the align boundary.

▪ Flip—Reverses the direction of the tangent or curvature.

◦ Preserve Position—Constrains the type of surface connection for the boundary to preserve its position.

◦ Preserve Tangency—Constrains the type of surface connection for the boundary to preserve its tangency.

◦ Preserve Curvature—Constrains the type of surface connection for the boundary to preserve its curvature.

• Align Menu—Available when you right-click a mesh boundary for which the Preserve None command is selected. Choose an alignment constraint, or choose Complete Align to finish the align operation.

• Knots Menu—Available when the Advanced Options check box is selected. Choose a command to add rows or columns, to deactivate a knot, or to remove it.