OpenOffice.org OpenOffice - 3.0 Quick Start Guide Page 159

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If you no longer need a group, place the mouse cursor in any cell in it
and select Data > Group and Outline > Ungroup. To remove all
groups on a sheet, select Data > Group and Outline > Remove.
Figure 124: Outline group controls
Filtering which cells are visible
A filter is a list of conditions that each entry has to meet in order to be
displayed. You can set three types of filters from the Data > Filter
sub-menu.
Automatic filters add a drop-down list to the top row of a column that
contains commonly used filters. They are quick and convenient, and,
because the condition includes every unique entry in the selected cells,
are almost as useful with text as with numbers.
In addition to each unique entry, automatic filters include the option to
display all entries, the ten highest numerical values, and all cells that
are empty or not-empty, as well as a standard filter. Their drawback is
that they are somewhat limited. In particular, they do not allow regular
expressions, so you cannot display contents that are similar, but not
identical, by using automatic filters.
Standard filters are more complex than automatic filters. You can set
as many as three conditions as a filter, combining them with the
operators AND and OR. Standard filters are mostly useful for numbers,
although a few of the conditional operators, such as = and < > can
also be useful for text.
Other conditional operators for standard filters include options to
display the largest or smallest values, or a percentage of them. Useful
in themselves, standard filters take on added value when used to
further refine automatic filters.
Chapter 5 Getting Started with Calc 159
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