On Fri, 8 Sep 2017 18:07:06 -0400, scofflaw wrote:

Can you help with technical and legal background information on how to use
a True-Type copyrighted font correctly with laypeople and printers?

Legally you can't unless the font publisher allows it.

Have you searched the web for a similar copyright-free font so you can avoid all this nonsense? You could have everyone design with the free font and then you could substitute your legally
purchased version when the document is finished and sent to the publisher.

The commercial printer may need to purchase the font as well.

To clarify the font issue for non-commercial use in road signs,
much has been written about the subject of choosing roadsign fonts:
http://www.nytimes.com/2007/08/12/ma...12fonts-t.html

The current standard USA sign font is (still) Gothic:
https://en.wikipedia.org/wiki/Highway_Gothic

More than a decade ago the choice was either Gothic or Clearview:

https://typographica.org/on-typograp...r-us-highways/

Where Clearview began to be phased in around 2002:
https://en.wikipedia.org/wiki/Clearview_(typeface)

However Clearview was discontinued due to issues:
http://news.averydennison.com/blog/h...nt-refuses-die

Today, the best public font for road signs is:
https://store.typenetwork.com/foundr...ies/interstate

However, that font is not a free font; but legally free fonts exist.
https://www.onlinewebfonts.com/search?q=roadgeek

Specifically I have chosen the free "Roadgeek 2005 Series B" narrow font:
http://www.fontspace.com/michael-d-adams/roadgeek-2005

Download the desired free font ("Roadside Series B Regular") he
https://www.onlinewebfonts.com/downl...1beacfc13bb8b3

Determine the license agreement, where the license says:
"This font may be freely distributed and used provided copyright
notifications remain intact."

The copyright notification says:
"Copyright (c) Michael D. Adams, 2005. All rights reserved."

Look up how to embed the fonts into Windows PowerPoint 2007:
https://support.microsoft.com/en-us/...-in-powerpoint

Check for compatibility issues with Mac PowerPoint 2007:
http://www.pptfaq.com/FAQ00076_Embedding_fonts.htm

The line of interest on embedding compatibility in that summary is:
"Mac versions of PowerPoint can't embed fonts or use fonts that have been
embedded by a Windows version of PowerPoint."

The line of interest in the copyright notice is:
"This font may be freely distributed and used provided copyright
notifications remain intact"

The questions, as stated in the original post, are only about:
Q1: Embedding a specific font into both Mac & Windows PowerPoint 2007.
Q2: Complying with the legal agreement that the copyright remain intact.