the difference between C/E/H in journal file

[KSDSGYM]

What is the difference between C/E/H at the beginning of the line in the journal file where the time is written?
'C 02-Nov-2022 08:53:40.208;
'E 02-Nov-2022 08:53:36.967;
'H 02-Nov-2022 08:50:02.643;

[barthbradley]

https://knowledge.autodesk.com/support/revit/learn-explore/caas/sfdcarticles/sfdcarticles/How-to-rea...

[KSDSGYM]

I've looked at that URL several times, but couldn't find a description of C/E/H.
Is there any explanation for C/E/H?

[Revit_Whisperer · Accepted solution]

'C is comments

I don't know what E and H stand for

But for 'H it always precedes a data or directive call

'E appears before commands that aren't under the H category

Autodesk are probably the only one who could tell you what they stand for.

[KSDSGYM]

@Revit_Whisperer 
Your comment was very helpful. Thank you.