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DYABOLA - Manual of Subject Catalogues
4.2 Combining Search Results

If you want to combine Search Results by means of logical operators, choose the first option in the "Tools" Submenu :

combine
time restriction
save
load

delete

rename
copy
export
quit

After you have pressed Return, the cursor will jump into the narrow righthand window with the list of Search Results. By pressing Return, you can select the first Search Result that is to be combined with a further result.

Another window will now appear in which you can choose between five different operators:

AND (as well as)*
OR (either and) +
XOR (either or) /
Diff (without) -

NOT (minor)

The program will now take you again into the narrow Search Result Window, in which you can select the second result. Finally you will be requested to give any name you choose to the result of this combination. This result too will be filed in the results list on the lefthand side of the screen and can be read by activating "-- Display Result".

If you want to merge two results, choose the function "OR". If you want to display the common material contained in two results, then choose "AND". A typical example of this is: You have listed in one result the works of E. Berger, in another the publications on the Parthenon. If you now want to find out which publications have been written by Berger concerning the Parthenon, then you will have to move the cursor to the condition "AND".

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