Meta-data is additional information you can add to any of your local documents, for example sample collection history, organism identiﬁcation, primers used etc. Meta-data is added in the Properties view under the Info tab (see Figure 5.7 ). This tab displays standard properties of documents such as the name and description, plus any meta-data you have added. Any meta-data that you add can appear in a column in the document table, and can be treated as a user-deﬁned ﬁeld for use in sorting, searching and ﬁltering your documents.
When multiple documents are selected, the Properties view displays all of the ﬁelds and meta-data belonging to the selected documents. When all documents have the same value for a ﬁeld, it is displayed in the viewer. If the documents have diﬀerent values, or some of the selected documents do not have a value, then the ﬁeld will show that it represents multiple values. Changes made to the ﬁelds will apply to all selected documents.
You can add meta-data to any of your local documents, including molecular sequences, phylogenetic trees and journal articles. You cannot add meta-data to search results from NCBI or EMBL etc until the documents are copied into one of your local folders.