function [varnames,nestedVarnames,underlines] = getVarNamesDispLines()

        varStrs = strings(1,t.varDim.length); 

        ulStrs = strings(1,t.varDim.length); 

        if haveNestedTable, nestedVarnameDispWidths = ceil(vectorizedWrappedLength(nestedVarnameStrs)); end 

        for ii = 1:t.varDim.length 

            varname = varNames(ii); 

            % Use the wider of varDispWidth and varNamesDispWidth to

            % determine the header width and pad to the varDispWidth if

            % necessary. However, when padding, this number has to be

            % adjusted to account for the fact that the number of

            % characters in the char vector for the varname do not

            % correspond to the display width, due to:

            % * Strong tags

            % * Hyperlinks (and thus no strong tags)

            % * Wide characters

            % * Narrow characters or wide-displaying characters that don't

            % report to be wide (nothing to be done about those).

            % Pad out variable names if necessary to match the data display

            % width. Varnames have already been made bold.

            varnameNumCharsToDisp = strlength(varname) + (varDispWidths(ii) - varNameDispWidths(ii)); 

            varStrs(ii) = pad(varname, ... % wrap tightly with strong tags 

                              varnameNumCharsToDisp,'both',' '); 

            if haveNestedTable 

                % Pad the nested var names out to the full data display width,

                % accounting for bold markup tags around each nested name.

                nestedVarnameStrs(ii) = pad(nestedVarnameStrs(ii), ...

                                            strlength(nestedVarnameStrs(ii)) + (varDispWidths(ii) - nestedVarnameDispWidths(ii)),'both',' ');

            end 

            % Create underlines under each variable name to the full data

            % display width.

            ulStrs(ii) = nUnder(ulDispWidths(ii)); 

        end 

        if t.dispRowLabelsHeader 

            % Need to print the name of the rowDim; add it to the beginning

            % of the array            

            ulStrs = [nUnder(rownameWidth), ulStrs];        

            varStrs = [pad(rowDimName, ... % wrap tightly with strong tags

                           strlength(rowDimName) + (rownameWidth - rowDimNameWidth),'both',' '), varStrs];

            nestedVarnameStrs = [nSpaces(rownameWidth), nestedVarnameStrs];

        end 

        % Join all the variable names and underlines with spaces.

        spacesBetween = string(nSpaces(between)); 

        if ~t.dispRowLabelsHeader && t.rowDim.hasLabels 

            % table doesn't print a header (dimname) for rownames, but we

            % still have to account for the width with additional spaces.

            leadingSpaces = nSpaces(indent + rownameWidth + between); 

        else

            % timetables always wind up here, and tables without rownames

            leadingSpaces = nSpaces(indent);

        end 

        varnames = leadingSpaces + join(varStrs,spacesBetween); 

        nestedVarnames = leadingSpaces + join(nestedVarnameStrs,spacesBetween); 

        underlines = leadingSpaces + join(strongBegin + ulStrs + strongEnd, spacesBetween) + looseline; 

    end