Okay. Also, I noticed that the default cover file text shown in the User Guide does not appear to be the same default text I get when don't add a template. Not sure if that's something I'm doing or misunderstanding or if I should update this in the User Guide.
What's in the User Guide:
Spoiler:
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Cover</title>
</head>
<body>
<div style="text-align: center; padding: 0pt; margin: 0pt;">
[...etc.]
What I get with the beta:
Spoiler:
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
<title>Cover</title>
</head>
<body>
<div style="height: 100vh; text-align: center; padding: 0pt; margin: 0pt;">
[... etc]
Should I update?