Currently possible steps in a platform definition file:

Click element
Send keystroke
Get element list when ID contains
Send keystroke when attribute of element in element list contains
Process reCaptchaV2
Wait until element is invisible
Switch to new window/tab
Switch to default window
Switch to iframe
Find in source
Locate image captcha
Locate text captcha
Wait


Example steps of the XenForo platform definition file. Each step can either return "OK" when successful or an error "ERROR: ...."

1. Click element
2. Get element list when ID contains
3. Send keystroke when attribute of element in element list contains
4. Send keystroke when attribute of element in element list contains
5. Send keystroke when attribute of element in element list contains
6. Click element
7. Process reCaptchaV2
8. Wait until element is invisible
9. Click element
10. Find in source
11. Find in source
12. Switch to new window/tab
13. Find in source
14. Find in source

When not in the platform defintiion file, where will the code get information about what to do after the execution of each step?

Example:

#10 (Find in source) is sucessful, the text we seach for was found, and it shall stop further processing
#13 (Find in source) is successful, the text we search for was found, and it shall NOT stop further processing but instead retry with new data (username is use for example)

So when they cannot set in the platform def that #10 shall stop further processing, or that #13 shall retry with new data, where do they set that?

If they would create settings files for various situations, there must be somehow a reference to the step in the platform definition file, like "What to do when #10 is successful" and such.
I just cant explain it better, I only hope you know what I mean.
If not, just give me an idea about how you would do that.