@1
COPYRIGHT (C) 1998 University of Ulm
@2 help directory
 The following HELP messages are available to obtain information on
 the MGDCOM file:

 HELP CONTENT     - General MGDCOM File description
 HELP DESK        - Address of database producer
 HELP DFIELDS     - List of display field codes
 HELP EFIELDS     - SELECT command and E-number lists
 HELP FORMAT      - Predefined formats for DISPLAY
 HELP SFIELDS     - List of search field codes

 For a list of more general help topics such as command usage, enter
 'HELP MESSAGES' at an arrow prompt (=>).

@3 help accession
 Accession numbers in the MGDCOM File are compound numbers, which are
 specific for the MOGADOC database.

@4 help content
 The MGDCOM File contains substance specific data such as names and
 synonyms, gross and structural formulas, accession numbers, as well
 as numerical data (distances, angles) and graphical informations. For
 various numerical data sets conformational descriptions are given.

 For more detailed information on file structure, enter 'HELP DFIELDS'
 or 'HELP SFIELDS' at an arrow prompt (=>).

@5 help crossover
 The term 'file crossover' refers to the use of an answer set created
 by a search in one file as a search term or profile in another file.
 Typically, a file crossover search uses accession numbers for one file as
 search terms in another file.

 You may use a MGDCOM File answer set containing MOGADOC specific compound
 numbers as a search term or profile in the MGDLIT File.  Saved substance
 answer sets must be ACTIVATEd in the MGDCOM File before they can be used
 as a search term or profile in the other file.

@6 help desk
 
 Questions concerning content of database:

    Dr. Juergen Vogt
    Sektion Spektren- und
    Strukturdokumentation
    University of Ulm
    D-89069 Ulm
    Federal Republic of Germany

    Telefon     (+49) 731 50-31050
    Telefax     (+49) 731 50-31059

    Internet    Juergen.Vogt at Chemie.Uni-Ulm.DE
    WWW         http.//www.uni-ulm.de/strudo/

@7 help dfields
 The display fields in the MGDCOM File are listed below.  You may use
 any of these in the DISPLAY and SELECT commands.

 Display
 Code      Definition
 -------   -------------------------------------------------

 CN        Compound Number (specific for MOGADOC)
 MF        Molecular Formula (Hill system)
 DF        Descriptive Formula
 RN        Chemical Abstracts Registry Number
 NA        Compound Name and Synonyms
 SF        Structural Formula
 SD        Stereo Drawings
 METHOD    Method of Structure Investigation
 TEMP      Temperature of Structure Investigation
 RDIS      Refined Internuclear Distances
 RANGLE    Refined Bond Angles
 RDIHEDRAL Refined Dihedral and other Angles
 OTHER     Other Relevant Information
 LC        Locator (Accession number of MGDLIT entry, from 
           which the structural data are given in MGDCOM)
 UP        Update of Entry

 For more information on displaying individual fields, enter 'HELP
 FORMAT' at an arrow prompt (=>).  To find out about creating search
 terms from display fields, enter 'HELP SELECT'.

@8 help efields
 The following fields can be expanded:

 Expand
 Code                Definition
 ___________         _______________________________________

     /BI             Fragments of Compound Name and CAS
                     Registry Numbers

@9 help sfields
 The searchable fields in the MGDCOM file are listed below. If you
 do not specify a field, your term will be searched in the Basic
 Index, which contains chemical name fragments from the compound
 name and synonym field.

 Search Code         Definition
 -----------         -------------------------------------------------

      /BI            Fragments of substance names and Chemical Abstracts
                     Registry Numbers
      /NA            Compound Name (bound phrase)
      /CNS           Compound Name Segment
      /CN            Compound Number (specific for MOGADOC)
      /RN            Chemical Abstracts Registry Number
      /MF            Molecular Formula (Hill system)
                     element symbols separated by blanks
      /ELF           Element Formula (subscripts omitted)
      /ELC           Element Count (number of different elements in MF)
      /ATC           Atom Count (total number of atoms in MF) 
      /PG            Periodic Group
                       A1    Alkali metalls
                       A2    Earth alkali metalls
                       .     .
                       A6    Oxygen main group
                       A7    Halogens
                       A8    Noble gases
                       B1    Copper group
                       B2    Zinc group
                       .     .
                       B8    Iron and noble metalls
                       T1    Transition metalls of first row
                       T2    Transition metalls of second row
                       T3    Transition metalls of third row
                       LNTH  Rare Earth Elements
                       ACTN  Actinide Elements
      /EL            Element Occurence
      /C             Individual Element Count for Carbon
      /H             Individual Element Count for Hydrogen
      /N             Individual Element Count for Nitrogen
      /O             Individual Element Count for Oxygen
      /P             Individual Element Count for Phosphorus
      /S             Individual Element Count for Sulfur
      /F             Individual Element Count for Fluorine
      /METHOD        Method of Structure Determination (bound phrase)
      /AV            Availibility of Numerical Data:
                       RDIST      refined distances
                       RANGLE     refined bond angles
                       RDIHEDRAL  refined dihedral angles
      /ATD           atoms defining bonded or non-bonded distances
                       atom1 and atom2 from RDIST
      /ATA           atoms defining bond angles
                       atom1, atom2 and atom3 from RANGLE
                       central atoms in definition labeled also by *
                       example: O *C Cl
      /DIS           numerical values for internuclear distances
                       in Angstroem
      /ANG           numerical values for bond angles in degree
      /ALFA          numerical values for dihedral and other angles
      /LC            Accesion number of MGDLIT entry, from which the
                       numerical data are taken
      /UP            Update (e.g. 19951105 for November 5, 1995)

 Search and display fields generally have the same codes. For a list
 of display fields, enter 'HELP DFIELDS'at an arrow prompt (=>).

@10 help format
 Search results in the MGDCOM File may be displayed by specifying
 the individual display fields you wish to see, one of the fixed
 combinations of fields listed below, or a combination of these.

 The following fixed combinations of fields can be requested.

 IDE --------- CN,MF,DF,RN,NA,SF,LC
 PARAMETER --- SD and numerical parameters
 ALL --------- CN,MF,DF,RN,NA,SF,SD and numerical parameters
 REFINED _____ AV,RDIST,RANGLE,RDIHEDRAL
 SAMPLE ------ CN,MF,DF,RN,NA
 HIT --------- only retrieved search fields

 To display a particular field or fields, enter the display field
 codes.  For a list of the display field codes, enter 'HELP DFIELDS'
 at an arrow prompt (=>).  Examples of formats include: 'NA';
 'CN,MF,NA'; 'IDE'; 'NA,PARA'.  The order of the terms in the formats
 is not important, but the information will be displayed in the same
 order as the format specification.

 All of the formats may be used with the DISPLAY ACC command to
 display the record for a specified accession number.

@11 help range

@12 help update
 It is planned to update the database every year.

@13 help (L)
 The link operator, (L), is used in the MGDCOM File to specify that
 two terms must occur in the same substance name.

 Example: => SEARCH SULFANDIYL (L) THIO
           (links two terms together in the same name)

@14 help (s)
 The (S) operator cannot be used in the MGDCOM File.

@15 help (p)
 The (P) operator cannot be used in the MGDCOM File.

@16 help collectives

@17 help highlight
  Highlighting is presently not available in the MGDCOM File.

@18 help strategy

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@21 Alt F1

@22 Alt F2

@23 Alt F3

@24 Alt F4

@25 Alt F5

@26 Alt F6

@27 Alt F7

@28 Alt F8

@29 Alt F9

@30 Alt F10

@31 F1

@32 F2

@33 F3

@34 F4

@35 F5

@36 F6

@37 F7

@38 F8

@39 F9

@40 F10

