1. Open Libre Office Writer's "Modern business letter serif" template.
2. Wonder how to fill in fields like <Sender's name> and <Company Name>.
3. (This would be a brick wall for most users...)
4. Right click on one, choose Fields; in the Edit Fields dialog that appears choose Help then Read Help Online.

Result: my browser launches and goes to https://help.libreoffice.org/swriter/modules/swriter/ui/editfielddialog/next?Language=en-US&System=WIN&Version=5.4
but that page is a 404. It seems nothing in that path works, nor does .../editfieldSdialog.

Other dialogs have online help that sort of works, e.g. Styles > Edit Style > Font > Help goes to https://help.libreoffice.org/index.php?title=Swriter/cui/ui/charnamepage/westfontnamelb-nocjk&redirect=no which somehow redirects to https://help.libreoffice.org/swriter/cui/ui/charnamepage/westfontnamelb-nocjk?Language=en-US&System=WIN&Version=5.4 which finally has a link to something.

Expected result: Read Help Online should load a relevant URL. I can't find one specific to 5.4 but there is https://help.libreoffice.org/Writer/Edit_Fields

Since this is likely to be a user's first exposure to a field, that help specific to the Edit Field dialog should link to something more general about fields, perhaps https://help.libreoffice.org/5.4/en-US/text/swriter/guide/fields.html?&DbPAR=WRITER&System=WIN

And the basic beginner "How to get default templates in Writer to not have <SomeFieldName>/Placeholder all over them" issue needs to be covered.  I thought Tools > Options > Libre Office > User Data would do it (help at https://help.libreoffice.org/Common/User_Data#bm_id3152801 ), but that doesn't seem to work here.