After figuring out, with help on Reddit (ht: Adam), some nuances affecting timestamps, column mode, and the Special Properties TIMESTAMP, and TIMESTAMP_IA, I think the following modifications to section 7.2 (Special Properties) of the manual would be worthwhile.
As it stands, the relevant part reads as follows: 'TIMESTAMP' The first keyword-less timestamp in the entry. 'TIMESTAMP_IA' The first inactive timestamp in the entry. Both are slightly incorrect and that can be fixed by changing to the following: 'TIMESTAMP' The first inactive keyword-less timestamp in the entry. 'TIMESTAMP_IA' The first inactive keyword-less timestamp in the entry. In addition, the following three clarifying details would be useful (the last of them is required) perhaps as a footnote: For both TIMESTAMP and TIMESTAMP_IA: the word "first" refers to the first occurrence in the entry, not the earliest in time; the prefix 'CLOCK:' at the beginning of a clock entry is considered a keyword in this context; and timestamps inside property drawers are ignored. regards. P.S. I'm not familiar enough with the various moving parts to provide the above as a proper git patch. However, FWIW, I did the following. I modified a local copy of org-manual.org and then I ensured that at least a PDF export (produced using 'C-c C-e l p', but only the section in question) looked sensible. Then I produced a diff-based patch file. Here it is, in case its of any use: #### START OF PATCHFILE #### --- work/git/org-mode/doc/org-manual.org 2022-10-06 11:49:32 +++ org-manual-changed.org 2024-01-27 22:44:36 @@ -5353,8 +5353,8 @@ | =PRIORITY= | The priority of the entry, a string with a single letter. | | =SCHEDULED= | The scheduling timestamp. | | =TAGS= | The tags defined directly in the headline. | -| =TIMESTAMP= | The first keyword-less timestamp in the entry. | -| =TIMESTAMP_IA= | The first inactive timestamp in the entry. | +| =TIMESTAMP= | The first active keyword-less timestamp in the entry.[fn::For both TIMESTAMP and TIMESTAMP_IA: the word "first" refers to the first occurrence in the entry, not the earliest in time; the prefix 'CLOCK:' at the beginning of a clock entry is considered a keyword in this context; and timestamps inside property drawers are ignored.] | +| =TIMESTAMP_IA= | The first inactive keyword-less timestamp in the entry. | | =TODO= | The TODO keyword of the entry. | ** Property Searches #### END OF PATCHFILE ####