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 _evalLaunch()      Call CA-Clipper code blocks from C
 _evalNew()         Initialize an EVALINFO structure for use
 _evalPutParam()    Place a parameter in an EVALINFO structure
 _evalRelease()     Release all parameter references in an EVALINFO structure
 _itemArrayGet()    Retrieve an element of an Item of type ARRAY
 _itemArrayNew()    Create a new Item as an array
 _itemArrayPut()    Place an Item into a CA-Clipper-level array element
 _itemCopyC()       Copy a character Item's value into a C buffer
 _itemFreeC()       Frees a character string allocated by the Item API
 _itemGetC()        Retrieve a character value from an Item
 _itemGetDS()       Retrieve a date as a character string
 _itemGetL()        Retrieve a logical value from an Item
 _itemGetND()       Retrieve a numeric as a double
 _itemGetNL()       Retrieve a numeric long value from an Item
 _itemNew()         Creates a NIL or empty Item
 _itemParam()       Get parameter passed to an Extend routine from CA-Clipper
 _itemPutC()        Place a zero-terminated character value into an Item
 _itemPutCL()       Put character value into Item, ignoring null-terminators
 _itemPutDS()       Place a date string into an Item
 _itemPutL()        Place a logical value into an Item
 _itemPutND()       Places a double number into an Item
 _itemPutNL()       Place a long number into an Item
 _itemRelease()     Make an Item available for garbage collection
 _itemReturn()      Return an Item to CA-Clipper
 _itemSize()        Determine an Item's size
 _itemType()        Determine an Item's type

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