Sidebar functions.
| Function | Description | Links |
| op_sidebar_first() | Selects the first unhidden mailbox | sidebar_function_t, sidebar_function_api |
| op_sidebar_last() | Selects the last unhidden mailbox | sidebar_function_t, sidebar_function_api |
| op_sidebar_next() | Selects the next unhidden mailbox | sidebar_function_t, sidebar_function_api |
| op_sidebar_next_new() | Selects the next new mailbox | sidebar_function_t, sidebar_function_api |
| op_sidebar_open() | Open highlighted mailbox | sidebar_function_t, sidebar_function_api |
| op_sidebar_page_down() | Selects the first entry in the next page of mailboxes | sidebar_function_t, sidebar_function_api |
| op_sidebar_page_up() | Selects the last entry in the previous page of mailboxes | sidebar_function_t, sidebar_function_api |
| op_sidebar_prev() | Selects the previous unhidden mailbox | sidebar_function_t, sidebar_function_api |
| op_sidebar_prev_new() | Selects the previous new mailbox | sidebar_function_t, sidebar_function_api |
| op_sidebar_toggle_virtual() | Deprecated | sidebar_function_t, sidebar_function_api |
| op_sidebar_toggle_visible() | Make the sidebar (in)visible | sidebar_function_t, sidebar_function_api |
| sb_function_dispatcher() | Perform a Sidebar function | function_dispatcher_t, dispatcher_api |
| sb_next() | Find the next unhidden Mailbox | |
| sb_next_new() | Return the next mailbox with new messages | |
| sb_prev() | Find the previous unhidden Mailbox | |
| sb_prev_new() | Return the previous mailbox with new messages | |
