User`s guide

11.3.5.2 Suppress (No Drill-Down)
The Suppress property also hides a section when you run the report. Unlike the Hide property, however,
you cannot apply the Suppress property, then drill down to reveal the section contents. This property
can be applied absolutely, or conditionally using a formula. This is useful for writing form letters. For
example, in a form letter, you might create two Details sections: one to suppress when sales are equal
to or over $X and one to suppress when sales are under $X.
11.3.5.3 Suppress Blank Section
The Suppress Blank Section property hides a section whenever there is nothing in it. If something is
placed within the section and it produces a value in your report, then it becomes visible.
11.3.6 Hiding report objects
Crystal Reports has three formatting options in the Format Editor for hiding individual objects.
11.3.6.1 Suppress If Duplicated (Common tab)
The Suppress If Duplicated property prevents a field value from printing if it is identical to a duplicate
of the value that comes immediately before it in an iteration of the same section.
The value does not print, but the space in which it would have printed remains.
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Formatting