I was using jqgrid to display some "filtered" data on the grid, but some filters won't display any data. My immediate suspect was special characters that may interfere with XML markup.

The choice between a serial printer, parallel printer, or USB printer depends on various factors such as the specific requirements of the application, the type of data to be printed, and the available technology. Here are some considerations that might influence the preference for a serial printer over parallel or USB printers.