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### A.2.6 Menu Items

This section describes actions available from the Control Window menus additional to those also available from the toolbar (described in the previous section) and those common to other windows (described in Appendix A.1.2).

The File menu contains the following additional actions:

Duplicate Table
  Adds a new copy of the current Apparent Table to the list of known tables. This is like loading in the current table again, except that its apparent characteristics become the basic characteristics of the copied one, so for instance whatever is the current row order becomes the natural order of the new one.
Discard Table
  Removes the current table from the list and closes and forgets any view windows associated with it. A discarded table cannot be reinstated. You will be prompted to confirm this action. Discarding a table in this way may free up memory, for other operations, but often will not; whether it does or not depends on the details of where the table comes from. This action can also be triggered by hitting the Delete key on the keyboard when the table list has keyboard focus.
Move Table Up
  Moves the currently selected table up one slot in the tables list. This can be convenient for viewing, and it also influences the order in which tables are saved when doing a Multiple Table or Session save. This action can also be triggered by hitting ALT-up-arrow key on the keyboard when the table list has keyboard focus.
Move Table Down
  Moves the currently selected table down one slot in the tables list. This can be convenient for viewing, and it also influences the order in which tables are saved when doing a Multiple Table or Session save. This action can also be triggered by hitting ALT-down-arrow key on the keyboard when the table list has keyboard focus.
Send Table to ...
  Sends the currently selected table to a selected listening application using SAMP or PLASTIC. Select the desired recipient application from the submenu.
View Log
  Pops up the Log Window to display logging messages generated by the application. Intended mainly for debugging.

The Views menu contains actions for launching the windows which give certain views of the table metadata. These are all provided as toolbar buttons as well.

The Graphics menu contains actions for launching the windows which give various plotting and visualisation options. These are all provided as toolbar buttons as well.

The Joins menu contains actions for various types of table join. The items provided additional to those on the toolbar are:

Multiple SIA
  Displays the Multiple SIA Window which allows you to crossmatch with a remote image service.
Multiple SSA
  Displays the Multiple SSA Window which allows you to crossmatch with a remote spectrum service.
Internal Match
  Displays the Internal Match Window for finding internal matches between rows in the same table.
N-Table Match
  Displays a dialog for matching more than two tables together.

The Windows menu contains actions for controlling which table view windows are currently visible on the screen. If you have lots of tables and are using various different views of several of them, the number of windows on the screen can get out of hand and it's easy to lose track of what window is where. The actions on this menu do some combination of either hiding or revealing all the various view windows associated with either the selected table or all the other ones. Windows hidden are removed from the screen but if reactivated (e.g. by using the appropriate toolbar button) will come back in the same place and the same state. Revealing all the windows associated with a given table means showing all the view windows which have been opened before (it won't display windows which have never explicitly been opened).

Show Selected Views Only
  Reveal all view windows associated with the currently selected table and hide all others.
Show Selected Views
  Reveal all view windows which are associated with the currently selected table.
Show All Views
  Reveal all view windows associated with all tables.
Hide Unselected Views
  Hide all view windows associated with tables other than the currently selected one.
Hide Selected Views
  Hide all view windows associated with the currently selected table.
Hide All Views
  Hide all the view windows. If you get really confused, this is a good one to select to clear up your screen prior to reinstating the ones that you actually want to look at.

Note that the Control Window item () on menus on all other windows is also useful for window management - it brings back the control window if it's been hidden.

The VO menu groups together those actions which access remote data sources. All of these options can also be found in either the Load Window toolbar or the Joins menu.

The Interop menu contains options relevant to tool interoperability (SAMP or PLASTIC). These items are available elsewhere on the toolbar or File menu.

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TOPCAT - Tool for OPerations on Catalogues And Tables
Starlink User Note253
TOPCAT web page: http://www.starlink.ac.uk/topcat/
Author email: m.b.taylor@bristol.ac.uk
Mailing list: topcat-user@bristol.ac.uk