bpo-35097: Add IDLE doc subsection explaining editor windows. (#10206)
Topics include opening, title and status bar, .py* extension, and running.
diff --git a/Lib/idlelib/help.html b/Lib/idlelib/help.html
index b8fecce..24fd77d 100644
--- a/Lib/idlelib/help.html
+++ b/Lib/idlelib/help.html
@@ -381,6 +381,20 @@
</div>
<div class="section" id="editing-and-navigation">
<h2>Editing and navigation<a class="headerlink" href="#editing-and-navigation" title="Permalink to this headline">¶</a></h2>
+<div class="section" id="editor-windows">
+<h3>Editor windows<a class="headerlink" href="#editor-windows" title="Permalink to this headline">¶</a></h3>
+<p>IDLE may open editor windows when it starts, depending on settings
+and how you start IDLE. Thereafter, use the File menu. There can be only
+one open editor window for a given file.</p>
+<p>The title bar contains the name of the file, the full path, and the version
+of Python and IDLE running the window. The status bar contains the line
+number (‘Ln’) and column number (‘Col’). Line numbers start with 1;
+column numbers with 0.</p>
+<p>IDLE assumes that files with a known .py* extension contain Python code
+and that other files do not. Run Python code with the Run menu.</p>
+</div>
+<div class="section" id="key-bindings">
+<h3>Key bindings<a class="headerlink" href="#key-bindings" title="Permalink to this headline">¶</a></h3>
<p>In this section, ‘C’ refers to the <kbd class="kbd docutils literal notranslate">Control</kbd> key on Windows and Unix and
the <kbd class="kbd docutils literal notranslate">Command</kbd> key on Mac OSX.</p>
<ul>
@@ -416,6 +430,7 @@
</ul>
<p>Standard keybindings (like <kbd class="kbd docutils literal notranslate">C-c</kbd> to copy and <kbd class="kbd docutils literal notranslate">C-v</kbd> to paste)
may work. Keybindings are selected in the Configure IDLE dialog.</p>
+</div>
<div class="section" id="automatic-indentation">
<h3>Automatic indentation<a class="headerlink" href="#automatic-indentation" title="Permalink to this headline">¶</a></h3>
<p>After a block-opening statement, the next line is indented by 4 spaces (in the
@@ -725,6 +740,8 @@
</ul>
</li>
<li><a class="reference internal" href="#editing-and-navigation">Editing and navigation</a><ul>
+<li><a class="reference internal" href="#editor-windows">Editor windows</a></li>
+<li><a class="reference internal" href="#key-bindings">Key bindings</a></li>
<li><a class="reference internal" href="#automatic-indentation">Automatic indentation</a></li>
<li><a class="reference internal" href="#completions">Completions</a></li>
<li><a class="reference internal" href="#calltips">Calltips</a></li>