The basic operation buttons displayed allow you to: save the changes made, update the status (progress/in progress), undo/redo the last changes made to the project, and allow the visualization of the legend of the icons presented in SE GanttChart.
The "Undo" and "Redo" options will only be available if the respective configuration is set on the general parameters screen of the Gantt chart.
Note that during the editing of the structure, another user may have unlocked the structure and performed edits. When attempting to save the structure, the system will issue a message stating the fact and whether to save even at the risk of losing data.
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