Comment 2 for bug 1656713

Proposing to create a new "Path effects" subsection in the "Path" section (just after "Simplify") with the following content:
----
<sect2>
<title>Path effects</title>
<keys><shortcut><keycap>7</keycap></shortcut><action>show next editable path effect parameter</action></keys>
</sect2>
----

The action text is the same as the icon's tooltip. We can add a note if needed, but it seems ok without it. Any suggestion?