MACCS Editors

Editors. There are three types of editing common to chemical-scientific database operations data form and menu, text, and molecule. A separate facihty is provided for each in MACCS-II. 

Besides having a graphical user interface, MACCS-II also provides access to structures through MEDIT, a structure editor which is available from the command line or from a MACCS-II program. The MEDIT language has been extended to allow for the definition, identification, modification, and deletion of SGroups. 

A new side menu for drawing and manipulating structures with SGroups has been added to the MACCS-II structure drawing editor (see Figure 12). 

MEDIT (the Molecule EDITor) in MACCS-II is a set-oriented structure manipulation language. This language will be the subject of a future paper. 

Offline preparation and presentation of chemical structure graphics is now possible on a PC using a variety of query editor programs (7), such as those listed in Figure 3. In most cases these are specific to a single system, and use a proprietary format for transmission of the query structure between the PC and the mainframe computer. For example, STN Express allows query structures to be built offline and then, after connection to STN, uploaded and searched against the STN online structure files. Retrieved structures can be downloaded onto the PC and browsed offline in STN Express. Similarly, CHEMLINK is now available for Telesystemes-DARC, while in the case of in-house systems, ChemBase provides similar capabilities for MACCS. 

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See also in sourсe #XX -- [ ]

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