Filters the item list using the category of the selected item or items as the filter criteria.
BFTKN_FILTER_CAT_SELECTED or 1223
void FilterCategorySelected()
If the selected item in the mailbox item list has the “Follow Up” category, then issuing this token will filter the mailbox to only show items with the “Follow Up” category. If an item has multiple categories then it will filter item that have any of the matching categories. Similarly, if multiple items are selected, then the filter contains all the superset of categories on all of the selected items.
Note that at least one item must be selected in the list for this token to be enabled.