[neyet]

Originally Posted by theducks

REGEX is Regular Expressions (Sigil uses the PCRE dialect)
It is an extremely powerful search and replace tool for modifying code / documents. There are some REGEX tutorials here on MR. Look for them

Thanks for your explanation.

Originally Posted by theducks

search for a REGEX cheat sheet, it has the terms and some examples

Again thanks for your tip.

The following are some that I googled:

Quick-Start: Regex Cheat Sheet

PCRE Regex Cheatsheet

Regular Expressions in PCRE Format

Originally Posted by theducks

While you are at it, get the CSS (2.x) one also.

Thanks again.

Why CSS2? I thought the whole world has moved to CSS3 completely (CSS3 was released in 1999, about 25 years ago.)

Last I heard, modern web design ("modern" as in 2024) has embraced CSS4.

Originally Posted by theducks

Note The CSS we use is a SUBSET of that which is used for the WWW

Were you referring to CSS2 or CSS3?

What does that subset consists of specifically? With regards to the CSS that Sigil supports, is there a table of contents to which I can refer?

Originally Posted by theducks

Then, there are all those wonderful devices that don't fully support those (some due to the way they allow user control to override the publisher.

Were you referring to standalone (dedicated) eReaders? There are only a few now that support epubs, the most well-known being Nook and Kobo eReaders.

I used to own a Kindle, Sony, Nook and Kobo eReader.

But now I read my epubs on an Android smartphone using an app called ReadEra. The screen may be smaller compared to standalone ones but every one uses a smartphone nowadays, right?