TOC entries from within MD table

Operating system

macOS

Joplin version

3.1.24

Desktop version info

Joplin 3.1.24 (prod, darwin)

Client ID: d238670b529f4b479e91fd4bf8044ea2
Sync Version: 3
Profile Version: 47
Keychain Supported: Yes

Revision: d581264

ABC Sheet Music Plugin: 1.0.3
Backup: 1.4.2
BibTeX: 0.5.0
Create and go to tags and @notebooks: 1.3.7
Embed Search: 2.0.0
Emoji: 1.0.4
Hotfolder: 1.1.0
Insert Date: 1.0.1
Note Tabs: 1.4.0

What issue do you have?

If I impose a header on an entry in a markdown table using an HTML tag

like this:

|||
|-|-|
|<h1>Eggs</h1> | Ham |

the css specification is applied but the heading is not reported in [toc]. Is there any way to include in the [toc] some arbitrary string in a table?
And/or is it possible to include any arbitrary string in a note in the [toc] as a subheading absent the ## syntax?

Another use-case might be: include in the [toc] all the quotations in a block of text.
Just wondering.