Hi again Steve. I understand and accept that Audacity macros do not have Conditional Statements (If/Then/Else), or Iterative statments (FOR/DO loops), and that for that capability I will need to look at Nyquist; still on my list!
But my point here is not about whether Audacity is/not a programming language, as much as glaring inconsistencies in the features offered and not offered by Audacity, at least through the eyes of a still-wet-behind-the-ears newcomer.
My point is not the capability of the Macros system, but its inconsistencies.
Timely that you should mention it. I have this afternoon made two proposals (different boards) about using the “.LOG” feature of Notepad for billing records, something I have been using since around 1990.
The inconsistencies I see are that
(1) Interactive commands are not allowed in a macro via the Tools, Macro interface because “you can’t have interactive commands in a macro”, but
(2) Interactive commands are allowed in a macro, as long as you use Notepad to edit the text file.
That said (phew!) I must thank you again for your guidance. This afternoon I completed Assemble all Chapters of a Book
A major step. I have a BATch file and an Audacity macro to assemble all chapters of a book.
(1) Suppose a project folder such as “L:\Henry Lawson**S**hort **S**tories in **P**rose and **V**erse” populated with seventeen chapters identified by number “SSPOV_01.wav”, “SSPOV_02.wav”, “SSPOV_03.wav” representing individually recorded chapters and another series “SSPOV_01_Preface.wav” etc and “SSPOV_01_Suffix.wav” which were recorded in a single session with a slightly different tone from the text of the chapters.
(2) Suppose a DOS batch file which can process each triplet of files (“SSPOV_01_Preface.wav”, “SSPOV_01.wav”, “SSPOV_01_Suffix.wav” and offer them up to Audacity 3.1.3
(3) Suppose a single Audacity macro which can assemble three prepared WAV files to a single WAV file; pre/appends silences, and then export as an MP3 file.
Then we can assemble the component files of a book in about five minutes, almost all of it automatic, and hence error-free, and it is usually elimination of errors in processing that saves us the most time.
I have just finished working on a group project with 107 “chapters”, and my chapters averaged around 20 pages each.
I have yet to document the system but once that is done I can post it here for critical review 
I have found a few more puzzles along this path, but will post them in a new topic, after I have searched the forum to see if they have already been reported.
Thanks again for you presence and guidance.
Chris