When the interviewing program displays a grid, it tries to fit the whole grid within the current width of the browser page. If there are texts that are longer than the column width, the interviewing program wraps them over two or more lines so that they fit. You can switch line wrapping off so that all columns are as wide as is necessary to display the full text all on one line, and the respondent might need to scroll to see the full grid. To do this, type:

value is true to switch off line wrapping or false to switch it on.

You can use <nowrap> in any cell-format section of the grid specification, so you could have the column heading texts wrapped and the row heading texts not wrapped.