Here's the two relevant chunks:
Code:
<li><a href="#editorial">From The Chief Editor's Desk</a></li><br>
Code:
<hr class="sigil_split_marker" />
<!-- editorial -->
<a id="editorial"></a>
<h3>From The Chief Editor's Desk</h3>
What
href="#editorial" is saying is:
Jump to the
id="editorial" within the the
same exact file.
Because you are trying to SPLIT the
id="editorial" into a
different file, Sigil is warning you about it.
You can split it anyway, your links will break, and you can manually correct your links. Or if you want it automated by Sigil, you can specify the file within the href.
Let's say the file all this information is in a Chapter01.xhtml file:
Chapter01.xhtml
Code:
<li><a href="../Text/Chapter01.xhtml#editorial">From The Chief Editor's Desk</a></li><br>
[...]
<hr class="sigil_split_marker" />
<!-- editorial -->
<a id="editorial"></a>
<h3>From The Chief Editor's Desk</h3>
What the updated href is saying now:
Look for the
id="editorial" in THIS SPECIFIC FILE (
Chapter01.xhtml).
When you then split it, Sigil should auto-update your links for you:
After Sigil Split
Chapter01.xhtml
Code:
<li><a href="../Text/Chapter02.xhtml#editorial">From The Chief Editor's Desk</a></li><br>
Chapter02.xhtml
Code:
<!-- editorial -->
<a id="editorial"></a>
<h3>From The Chief Editor's Desk</h3>
Now you can see, the new link says:
Go look in
Chapter02.xhtml, and jump to the
id="editorial".