======File tab (tabs)======
{{ en:media::overview-tabs.png?50%&link}}
**Several files can be opened in parallel in each GRT main window**, which then appear next to each other in their own tab.

**To change** simply click on the desired tab.

**To close** each tab has a small (x)-symbol. This allows you to close the tab (and thus the opened file). If there are still unsaved changes, a corresponding warning appears. The last tab, i.e. if only **a** tab is still open, cannot be closed **for technical reasons.**

**To rearrange the tabs**, click on a tab and keep the mouse button pressed. Now you can move the tab to another position.

Below the tabs, the **file path** of the current file is displayed.

====Context Menu====
{{ en:media::overview-tabs-contextmenu.png?40%&link}}
**A right click** on a tab opens a context menu.

The context menu offers functions for creating a new charge, or for creating a copy of the current charge file.