Still saving Machine_FINAL_FINAL.ckp?
Tour 4 of 6
A .ckp can't show you what changed. Text can:
Every time you save in CLICK, ClickNick writes your ladder (as Python) into the workspace folder. Any comparison tool then shows the changed timer preset, contact, comment, or rung: WinMerge, GitHub Desktop, VS Code, Git, or two folders side by side. Git is optional. What matters is that every save leaves a copy you can compare with the last one.
When you edit that text yourself, Preview Changes shows the difference rung by rung before anything goes back into CLICK.