A co-worker and I are curious about when colspan and rowspan became available for usage in HTML tables.
We tried Google and Wikipedia, but the answer still seems to elude us.
I thought it might have been since HTML 2, or early-to-mid-90s, but he insists it wasn't until 2000 or later....
RFC 1942 introduced tables in May 96, the rfc includes rowspans so this is the earliest official document implementing them.
https://www.rfc-editor.org/rfc/rfc1942
Edit - Should mention that this is a refinement for html 2.0