Neue Zeilen (line feed) gehen nicht mit Shift+Enter sondern mit (backslash, backslash, blank)
\\
<html> This is some <span style="color:red;font-size:150%;">inline</span> HTML</html>
This is some inline HTML
<HTML> <p style="border:2px dashed red;">And this is some block HTML</p> </HTML>
And this is some block HTML
<php> echo 'The PHP version: '; echo phpversion(); echo ' (generated inline HTML)'; </php>
<php> echo 'The PHP version: '; echo phpversion(); echo ' (generated inline HTML)'; </php>
<PHP> echo '<table class="inline"> <tr> <td>The PHP version inside a block level element: </td>'; echo '<td>'.phpversion().'</td>'; echo '</tr></table>'; </PHP>
<PHP> echo '
'; </PHP>
<JS> let inhalt = 'Hallo Welt! (block JavaScript)'; document.write(inhalt); </JS>
</JS>