Uncompiled resource file. These files contain the source text of the translations in text format (separated by tab stop). RSC files should not be published, because they are not protected. Generally, RSC files are only used for data interchange. For example when texts are sent to a translator.

Compiled resource file. These files contain the compiled text of the translations. They are needed to guarantee the multilingual features. RSX files can only be opened and edited with the TextManager.

A key is a unique attribute. Multilingual texts are organized with the aid of keys and can be assigned to objects. The content of each key must be unique and should have an incremental number, or better still a prefix and an incremental number. Example: LABEL_0001.
The term key is often used in conjunction with data records, because each data record must have a unique attribute.

A data record is a closed entity within a database.
In the TextManager data records are shown in tabular form, so a line within the text manager corresponds to a data record.
A data record always consists of a key and the data fields containing the texts for various languages.

A data field is a constituent part of a data record. In contrast to the key, the content of the data field does not need to be unique.