I really don't understand your questions.
You are trying to compare a watermelon with a ruler.
Totally different things. Totally different uses. Neither is needed by the other. Yet each has a purpose.
You are using CSB 5 so this is what your Page Properties box looks like:
EVERY web page has a name (FILE NAME field in CSB5, SHORT NAME field in CSB3 &4). You have called a couple of your pages testimonials.htm, index.htm and many more.
CSB generates html web pages based on how you NAME them in CSB. Simple. Fact.
That page name becomes part of the website address, the URL of the web page.
And the sample shown above shows the web page name is pageprop.htm
CSB3 and 4 would name the page with a numerical id id11.htm, etc when the SHORT NAME field was left blank.
CSB 5 will try to pull an page name from the TITLE field if you check the box to do that. I do not recommend it because your TITLE may have punctuation that should NEVER be in a web page address.
Each of those pages has a tiny script that CSB input that sets a variable to match that page name.
Whatever YOU name that webpage in CSB, will show up in that tiny script.
It is harmless, leave it alone. Do not change it. No need to remove or edit it for any reason.
TlxPgNm means
TLX (trellix/csb program)
Pg (Page)
Nm (Name)
NONE of that HAS ANY IMPACT ON A PAGE TITLE. At All.
Separate entries into your web page properties.
The TITLE is simply a short phrase that defines the page. Can be left empty and it will NOT break anything.
A TITLE is not necessary. Many of my samisite.com pages have no title. Don't need them to function, or for presentation on that page. Ex: my samisite.com home page.... no title, family pics page has no title.
Some others do. Ex: my
iframes tutorial page has the title "iFrame Tutorial - IFrames described in detail!"
Personal choice.
What has caused your questions...? I am confused why this is an issue after years of using the program?