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CONTROL USE-AS-QUERY

CONTROL USE-AS-QUERY is located in the 2D and 2D/3D displays for each hit.

It allows you to use the 2D chemical diagram of the current hit as the starting point for a new search.

This command is available only in Graphics QUEST3D and not in Basic QUEST.

Example

Suppose the search question involves the search for a 4-membered carbon ring.

At a particular hit:

• Select USE-AS-QUERY

• WARNING - This will overwrite the structure already in the BUILD menu.
  Are you sure you want to read in this `hit' diagram? [N]

• Type Y <R>

• Do you want to retain any terminal hydrogens in this diagram? [N]

• Type N <R>

• The screen clears, summary statistics are displayed and the BUILD menu is restored with the skeleton diagram of the hit displayed in the drawing area.

  Note that if the diagram involves any functional groups created by GROUPS and if these involve terminal hydrogen then the H atoms are not discarded, eg.COCH3

(a)

If you choose to retain terminal hydrogens then when the diagram is displayed in the BUILD menu the hydrogen count on each atom is explicitly shown.

(b)

If the original search question did not involve a structural search then when you select USE-AS-QUERY no WARNING is displayed and the first prompt is:

• Do you want to retain any terminal hydrogens in this diagram? [N]

(c)

If, in the example above, after selecting USE-AS-QUERY, you change your mind and do not wish to use the hit as a query then the dialogue will be:

• WARNING - This will overwrite the structure already in the BUILD menu.
  Are you sure you want to read in this `hit' diagram? [N]

• Type N <R>

• The current hit is still displayed and the program is waiting for a new command.

(d)

CONTROL USE-AS-QUERY causes the search to QUIT. Thus any output from the current search will be lost.

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Volume 2 Chapter 4 Display Menus DIALBOX.