Doc: more details on some operators

doc/Expr.html

@@ -585,7 +585,7 @@ pre.rouge .ss {
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-<p><mark>TODO: Work in progress (last update on 2024/05/17, 15:47 p.m.)</mark></p>
+<p><mark>TODO: Work in progress (last update on 2024/05/20, 06:58 a.m.)</mark></p>
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@@ -1041,7 +1041,7 @@ pre.rouge .ss {
 <p>Boolean data type has two values only: <em class="blue">true</em> and <em class="blue">false</em>. Relational and boolean expressions result in boolean values.</p>
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-<caption class="title">Table 4. Relational operators</caption>
+<caption class="title">Table 4. Relational operators<sup>(*)</sup></caption>
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+<p><sup>(*)</sup> See also the  <code class="blue">in</code> operator in the <em>list</em> and <em>dictionary</em> sections.</p>
+</div>
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 <caption class="title">Table 5. Boolean operators</caption>
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@@ -1871,7 +1874,7 @@ These operators have a high priority, in particular higher than the operator <co
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-Last updated 2024-05-20 06:58:09 +0200
+Last updated 2024-05-20 09:40:23 +0200
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