LAD blocks are rendered from the TIA export with rails, contacts, coils and boxes, the block interface on top. Click an operand to change it, and push the network back as SimaticML.
Every network drawn from the real export, with titles and comments.
Click a contact or coil, change the tag, push.
Mixed blocks keep their SCL networks editable as text.
Graphical blocks travel as SimaticML, the format TIA Portal itself uses.