Think of a template as the form that everyone in a company must comply to. Templates can house many types of objects. These objects can be applied to a report after the data-intensive portion of the report design is completed. Applying an existing template to a report can save hours or potentially days of mundane formatting tasks.
Some types of tasks that can be accomplished by (but are not limited to) applying a template to a report are as follows:
Corporate logos and other images
Consistent page numbering formatting
Font style/color/typeface for data fields
Field border and background formatting
Field sizing
Group headers and footers formatting
Summary field formatting
Watermarks
Tricky formatting
Lines
Boxes
Repository objects
Report titles
Web site links
Formatting based on data-field type
How Are Templates Better Than Styles in Older Versions?
Templates are better than the Styles in older versions of Crystal Reports in so many ways that it's challenging to explain in a short section. However, because not all report designers have used Crystal Reports prior to version 10, they won't know how cumbersome styles used to be. For those of you new to Crystal Reports 10, feel free to skip this sidebar.
The main problem with the old Report Styles feature in older versions of Crystal Reports (such as 8.5) was that they were not customizable. The styles that one person created when the feature was initially introduced were the only options available. Even if you just didn't like the color red as the group name field and wanted to change it to blue, you were not able to, which was very limiting. This limitation alone made the Styles feature practically useless outside of learning how to create very simple reports.
These styles were also limited to data and group fields. No images or static text objects were included, and again because the styles could not be modified, they could not be updated in this way. The styles were hard-coded into the Crystal Reports designer so that no external .rpt files were used, whereas Templates enable the use of any .rpt file.