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Chapter 4: Spreadsheets in Calc
Defining Validity
To avoid invalid entries in a spreadsheet, define a validity condition. Select the cells to which
the validity condition is to apply, and open the Validity dialogue (in the Data menu). On the
Criteria tab, define the acceptable entry criteria (in this example: Text length, equal and 1)
in the appropriate lists and fields.
Next, click on the Error Alert tab. Select the option Show error message when invalid
values are entered and click Stop in the Action list box. Under Error message, enter an
appropriate text (e.g. On ly v (vacation), p (present), or s (sick) are
valid entries.) .
If a user were to now enter more than one letter in the corresponding cell in the sheet, the
message defined above appears.
Creating Input Help
Using the Validity dialogue, custom help functions can be created for a previously selected
area. Select the Input Help tab and check the box Show input help when cell is selected.
Enter a title in the respective field, and enter the help text in the field below. This text is then
displayed as a Help tip for the user.
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