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Deleting data

 


tex2html_wrap_inline33790 tex2html_wrap_inline33790 Syntax

BD>xdata : D1 [,D2 ...] tex2html_wrap_inline33712

where tex2html_wrap_inline36738 are the names of data-carriers, or bases containing data-carriers.

tex2html_wrap_inline33806 tex2html_wrap_inline33806

The XDATA:  command is used to delete data. Data is deleted on the quantities given as the arguments following the command. The list of arguments can include bases. If so, all data-carriers included in the base have their data deleted. See §6.2 for details of specifying collections for the definition part.

Where all data on specifically a data-element is deleted, the data-element is also deleted. Otherwise, where the data-carrier is an element, only the data portion only is deleted.

Data defined using the FACTOR:  command is also deleted.

If you delete a data carrier which has been associated with an index via the INDEXVEC:  command, the index is also deleted. A warning is printed.  



David Wooff
Wed Oct 21 15:14:31 BST 1998