We tested the reference implementation with data from 1K processes, without the need for scrollbars. Therefore, the three types of filters were combined in a single dialog. However, we did not exhaustively test every aspect. What you see are the default colors and fonts of the Tk widgets. Clarifications and Updates After initial publication of the standard, several related issues were raised and resolved.
Vendors are free to add Help buttons or menus, according to their in-house policies.
Users were clear that a single scrollbar is sufficient, and preferred because it creates less clutter. Since MQM begins by querying for a list of process IDs, presumably the list returned by the debugger would just show the tasks to which it was attached. Only the subset would be known to MQM, using the current structure. Yhis would not be reported in any way to the user. It is expected that the vendors might need to modify the message-area string and the popup windows accordingly.