Currently pressing comma / shift+comma in Microsoft Word browse mode does not do anything. It should at least jump to the beginning or end of the current table if any. Other container types such as lists could be added in the future, but in a separate issue as lists in MS Word are not exactly full containers in their own right, rather just a group of paragraphs formatted as list items.
Incubated in 84e6270.
This command does work, but I still realise that the command keeps reporting a non-existing cell, one number more than the actual amount of cells in the table.