If we need to modify the program by inserting a block with a command between two previously programmed blocks, we use a button  (Insert). The new block will be placed at the position (number) of the currently selected block. This, together with other following blocks, will move one position further (the number will increase by one). The button is not visible if the program is empty or if the program already has 99 blocks and it is not possible to add more. If this button is pressed, the following screen will appear:

 

 

All the functions that the insertable block can contain are available on this screen. If we change our mind about inserting a block (another command), we can return to the previous screen using the button  (Back). Otherwise, by pressing the appropriate button, we choose which command we want to insert into the program. In case we choose F: Free or E: The end, the command is inserted into the program and the previous screen is displayed. If we choose another command, the screen for setting the parameter of this command will appear (see previous articles). After confirmation, the command is inserted into the program and we return directly to the screen for managing blocks in the program.