A project is the largest building block of the TIS Editor. In a project, input data is converted to tables or graphs containing (parts of) this data in a desired format. The conversion is done by operations applying operators.

The tables in a project are organised in data nodes and folders. A folder contains one or more data nodes. A data node contains a sequence of operations resulting in the data node's result table

Data nodes can be connected to one another in two ways. The result table of one data node can serve as input table for the first operation of another data node, and operations of one data node can take as input result tables of other data nodes. See Update process between data nodes for details.

A project is opened by clicking on its name on the homepage. Opening a project leads to a list of the project's folders in the left column and an overview on the data nodes contained in the selected folder.