I did not check the wiki or internet ; just went on the documentation provided
On C backend: The specified '?Label' is not a label pointerHelp File wrote: OnErrorGoto(?ErrorHandler)
PokeS(10, "Hello World") ; Cause a #PB_OnError_InvalidMemory error
MessageRequester("OnError test", "This should never be displayed")
End
ErrorHandler:
MessageRequester("OnError test", "The following error happened: " + ErrorMessage())
End
On ASM backend: IMA