This command opens a window with two sections. In the left section, you can see all the blocks that are used in your program. Click on a block to view its corresponding parameters in the right column. You can now edit these parameters and set the changes by clicking the Apply button.
The modified block is displayed in blue in the selection list, if you do not accept the parameter changes made and select another block. All changes are discarded after you click on the Cancel button. You confirm your entries and exit the dialog with OK.
You can sort all the available blocks by name or by number by clicking the corresponding button on the upper-right of the list area.
Here, you can also make a fuzzle search for blocks. For details, see Edit -> Go to block.
If you select the "Select block from drawing" check box, when you select subsequent blocks from the list they are highlighted in the circuit program.