most programmers prefer using Quotations " ", in various HTML codes...
while my webpages often use simple Apostrophes ' '
<a href='http://URL here'>Title Of Link</a>
is the same thing as
<a href="http://URL here">Title Of Link</a>

The Quotations " " are probably more reliable than Apostrophes ' '.
But,
I've been using apostrophes occasionally because it's a little quicker when organizing hundreds of links
and I'm differentiating between href='http://URL here' (using apostrophes) and title="outer text here" (using quotations).

'Apostrophes' are especially NOT recommended when using title="outer text here" .
Technically, apostrophes will correctly work when using title='outer text here' .
BUT, the data will be corrupted if any text contains an apostrophe.
for example:
title='welcome to my mother's house'.
This usage of ' in the above example will corrupt the Title unless ""quotations are used.'

In short: don't get confused if I'm sometimes using apostrophes in the A HREF, instead of Quotations.
'Apostrophes' and "quotations" are basically the same.
The following 2 examples are using apostrophes in HREF'HTTP://URL_HERE' and Quotations in TITLE="OUTER TEXT HERE"
<a href='http://URL here' target="_blank" title="outer text here">Title Of Link</a>
<a href='http://URL here' Onclick="window.open(this.href); return false" A title="outer text here" >Title Of Link</a>

You can simply use Quotations for both HREF="HTTP://URL_HERE" and TITLE="OUTER TEXT HERE"

——————————————
additional HTML features:
writing hidden text which does take up space.
<div style="visibility: hidden">My Hidden Text </div>
<span style="visibility: hidden">......... </span>

(this SPAN STYLE="visibility: hidden" can also create a similar effect to using several &nbsp; lines).

<p hidden> hide an entire paragraph </p>

———————
also:
using &emsp;
is the same thing as using &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
using &ensp;
is the same thing as using &nbsp;&nbsp;&nbsp;
and
&thinsp; creates a thinner &nbsp;

&emsp; = 5 x &nbsp;
&ensp; = 2 x &nbsp;
&thinsp; = 1/2 &nbsp;

in other words
&emsp; = 5 times the width of &nbsp;
&ensp; = 2 times the width of&nbsp;
&thinsp; = 1/2 the width of &nbsp;

before using this Quick Reference Guide
it's probably a good idea to read the detailed instructions below

(from previous page  [Basic Tutorial/ 234984] )

This Page was created to give easy access for basic commands.
-It's a Quick Reference Guide- The commentary is using small text,
because we're already assuming that you're familiar with each basic task.
Thus, it's not necessary to explain in detail.

However, a mirror link as probably easier to read: Voy/235993