You find the instructions which are needed most frequently on the toolbar which will appear if the representation of the current block is ‘LAD’. If this bar does not appear you might click with the right mouse button on the grey pane next to the existing symbols and select ‘LAD-View’ out of the appearing context menu.
Further instructions can be selected if you click the symbol 
.
If the network is still empty you do not have to note the position of the cursor. But if rongs already exist you will have to position the cursor on a contact or on another function block before the inserting.
You open the editing field of the operands by the enter-key or by the entering a letter, a number, ‘#’ or the double inverted commas. After having inserted close the field with the enter-key, or, if you do not want to take over your insert you will press the ESC-key.
You can take over operands directly out of the machine. For this mark the element in the graphic window, in the address table or in the element tree. With operands which still start with a ‘?’ ( or which are completely empty) a click with the left mouse button is enough to insert the operand out of the machine. If you want to replace an already addressed operand select the last point out of the context menu.
You do not have to address the operands immediately as long as they start with a ‘?’. But as soon as you transfer the program into the PLC all obligatory operands have to be specified.
Parts of the network can be deleted by the ‘Del’-key.
By clicking right you get a context menu.
You open a block with a double click.
See also: