insert tables
// To insert a table in the rich content editor, click on the table symbol with the left mouse button
// Then define the table properties
Width details in pixels (number) or percentage possible (e.g. 100% for the full width)
// Under the ADVANCED tab, additional properties of the table can be set (visible grid, frame and background colours, etc.)
// If all properties of the table are defined, the table is created using the INSERT button:
// you can subsequent change the table by again clicking on the table symbol or via the individual symbols to the right of the table symbol:
// table row properties
// table cell properties
// insert row before
// insert row after
// delete row
// insert column before
// insert column after
// remove column
// merge table cells
// split merged table cells
