📄️ Load JSON dataHow to load data into the Gantt widgetPRO📄️ Import from fileHow to import project data into SVAR Svelte Gantt from files📄️ Import from ExcelHow to import tasks into SVAR Svelte Gantt from Excel and CSV filesPRO📄️ Export to fileHow to export Gantt data to PDF, PNG, Excel, and MS Project XML📄️ Save to backendHow to save data to the server