For every task TrackStudio enables you to find the tasks similar to the first one. The similar tasks are searched by the following fields: 

• task name
• task description
• message description

Common words (the, a, if, etc) are not considered in the similar task search. The search is case insensitive. Each similar task found corresponds to the rating. The more similar the task is, the higher the rating it has. 

TrackStudio indexes the database upon startup. Indexing is a process of index creation. The index is a special database that contains compiled versions of the documents and is optimized for quick lookup. The index database is stored in a set of files, and created in the folder specified in the trackstudio.indexDir parameter in the trackstudio.properties file.