The options window allows you to display the options tree. This tree allows you to set the appropriate options of the document, such as units, language, visualization tolerance, etc.

Contrary to software options common to all documents, these options are saved in the document, which allows different settings depending on the document (for example, the visualization tolerance will be different depending on the size of the modeled part) and allows you to find them when opened on another station.

Under the tree banner, a tools bar allows to display more or less information. The different icons are explained here.