With this command all functions will be displayed in a dialog box. You can choose whether to have a list displaying user-defined or standard functions.
If one of the functions is selected and the dialog box is closed with OK, then the highlighted function will be inserted at the current cursor position. (The management will proceed, as in the input selection.)
If the 'With arguments' option was selected in the dialog box, then the necessary input and output variables will also be inserted.