Design view

The design view is always available, even if the preview is not because it isn't possible to connect to datasources or no data is saved in the report.
The design view provides the translator with an overview on how the report looks like which help selecting the right wording according to the context. While the preview is generated by Crystal Reports engine and is therefore an exact view of what the report is, the design view in contrary is computed by Crystal Translator and is an approximation. Due to this, the design view shouldn't be used to determine if texts are truncated for instance.
 

Special fields
Data Fields populated from data contained in the databases are represented with their name between square brackets [], for instance [Field2] in the top screenshot above.
Pictures are represented with the text [Picture object]
HTML or RTF data fields are represented by [Blob field]
Graphs such as pies and bars are represented by [Graph object]
Cross tab tables are represented by [Cross Tab]
Graphical world maps are represented by [Map object]
OLAP objects are represented by [OLAP object]