bpo-35213: Where appropriate, use 'macOS' in idlelib. (#10478)
diff --git a/Lib/idlelib/help.html b/Lib/idlelib/help.html
index a8afc75..e2bf773 100644
--- a/Lib/idlelib/help.html
+++ b/Lib/idlelib/help.html
@@ -108,7 +108,7 @@
<p>IDLE has the following features:</p>
<ul class="simple">
<li>coded in 100% pure Python, using the <a class="reference internal" href="tkinter.html#module-tkinter" title="tkinter: Interface to Tcl/Tk for graphical user interfaces"><code class="xref py py-mod docutils literal notranslate"><span class="pre">tkinter</span></code></a> GUI toolkit</li>
-<li>cross-platform: works mostly the same on Windows, Unix, and Mac OS X</li>
+<li>cross-platform: works mostly the same on Windows, Unix, and macOS</li>
<li>Python shell window (interactive interpreter) with colorizing
of code input, output, and error messages</li>
<li>multi-window text editor with multiple undo, Python colorizing,
@@ -128,7 +128,7 @@
<p>Output windows, such as used for Edit => Find in Files, are a subtype of editor
window. They currently have the same top menu but a different
default title and context menu.</p>
-<p>On MacOS, there is one application menu. It dynamically changes according
+<p>On macOS, there is one application menu. It dynamically changes according
to the window currently selected. It has an IDLE menu, and some entries
described below are moved around to conform to Apple guidlines.</p>
<div class="section" id="file-menu-shell-and-editor">
@@ -304,7 +304,7 @@
<dt>Configure IDLE</dt>
<dd><p class="first">Open a configuration dialog and change preferences for the following:
fonts, indentation, keybindings, text color themes, startup windows and
-size, additional help sources, and extensions (see below). On OS X,
+size, additional help sources, and extensions (see below). On macOS,
open the configuration dialog by selecting Preferences in the application
menu. To use a new built-in color theme (IDLE Dark) with older IDLEs,
save it as a new custom theme.</p>
@@ -349,7 +349,7 @@
</div>
<div class="section" id="context-menus">
<span id="index-4"></span><h3>Context Menus<a class="headerlink" href="#context-menus" title="Permalink to this headline">¶</a></h3>
-<p>Open a context menu by right-clicking in a window (Control-click on OS X).
+<p>Open a context menu by right-clicking in a window (Control-click on macOS).
Context menus have the standard clipboard functions also on the Edit menu.</p>
<dl class="docutils">
<dt>Cut</dt>
@@ -399,7 +399,7 @@
<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>
+the <kbd class="kbd docutils literal notranslate">Command</kbd> key on macOS.</p>
<ul>
<li><p class="first"><kbd class="kbd docutils literal notranslate">Backspace</kbd> deletes to the left; <kbd class="kbd docutils literal notranslate">Del</kbd> deletes to the right</p>
</li>
@@ -521,8 +521,8 @@
<p>Command history</p>
<ul class="simple">
<li><kbd class="kbd docutils literal notranslate">Alt-p</kbd> retrieves previous command matching what you have typed. On
-OS X use <kbd class="kbd docutils literal notranslate">C-p</kbd>.</li>
-<li><kbd class="kbd docutils literal notranslate">Alt-n</kbd> retrieves next. On OS X use <kbd class="kbd docutils literal notranslate">C-n</kbd>.</li>
+macOS use <kbd class="kbd docutils literal notranslate">C-p</kbd>.</li>
+<li><kbd class="kbd docutils literal notranslate">Alt-n</kbd> retrieves next. On macOS use <kbd class="kbd docutils literal notranslate">C-n</kbd>.</li>
<li><kbd class="kbd docutils literal notranslate">Return</kbd> while on any previous command retrieves that command</li>
</ul>
</li>
@@ -757,7 +757,7 @@
custom key set in the Configure IDLE dialog under the keys tab.</p>
</div>
<div class="section" id="idle-on-macos">
-<h3>IDLE on MacOS<a class="headerlink" href="#idle-on-macos" title="Permalink to this headline">¶</a></h3>
+<h3>IDLE on macOS<a class="headerlink" href="#idle-on-macos" title="Permalink to this headline">¶</a></h3>
<p>Under System Preferences: Dock, one can set “Prefer tabs when opening
documents” to “Always”. This setting is not compatible with the tk/tkinter
GUI framework used by IDLE, and it breaks a few IDLE features.</p>
@@ -817,7 +817,7 @@
<li><a class="reference internal" href="#help-and-preferences">Help and preferences</a><ul>
<li><a class="reference internal" href="#help-sources">Help sources</a></li>
<li><a class="reference internal" href="#setting-preferences">Setting preferences</a></li>
-<li><a class="reference internal" href="#idle-on-macos">IDLE on MacOS</a></li>
+<li><a class="reference internal" href="#idle-on-macos">IDLE on macOS</a></li>
<li><a class="reference internal" href="#extensions">Extensions</a></li>
</ul>
</li>
@@ -899,7 +899,7 @@
<br />
<br />
- Last updated on Nov 10, 2018.
+ Last updated on Nov 12, 2018.
<a href="https://docs.python.org/3/bugs.html">Found a bug</a>?
<br />