DBFieldDef :: CreateSource - Create source definition for view
The view source definition is passed in the parsed string format in bnf_data.
Return value:  Success ( logical  )
Implementation overview
-  - internal feature (not documented)
 DBFieldDef :: CreateSource ( names, bnf_data )
-  - internal feature (not documented)
 DBFieldDef :: CreateSource ( names, nexpression )
Implementation details
- 
- internal feature (not documented)
 logical DBFieldDef  :: CreateSource ( NString &names, BNFData *bnf_data )
 - names - - Title unknown
- bnf_data
 - Expression in BNF format
An expression can be converted from a string into BNF format by calling the dictionary function ParseExpression(). 
 to list
- 
- internal feature (not documented)
 logical DBFieldDef  :: CreateSource ( NString &names, NString &nexpression )
 - names - - Title unknown
- nexpression - - internal feature (not documented)
 to list

