The primary purpose of all news window commands is to facilitate the rapid definition of values for a news window The current query can be set directly, canceled, set by appending a new query element to an existing query (current or previous), or set by direct recall. Excepting the semantics of using a solitary forward-slash ( A double-slash ( A single-slash ( Following is a synopsis of all news window commands, grouping them by usage paradigm. The direct-set command forms are: category The query-cancellation command forms are: The append command forms which combine an existing query with a new query element are: category category The direct recall forms are:Summary of News Commands by Paradigm
The following key principles underlie all of the command forms that have been described in the preceding section: