Can build trailSelectionList and get the id.  From there I can set the
global variable to contain the name of the selected trail so that it can
be available for mapPage.  That will enable me to build all of the html
from the trails.json page, as I did once before.
These are my notes about very important milestones.  I can now see that
history shows v1.0, so this note is not so important.
Now place the trailId into a new global function.
All set to start moving separate html files into index.html.
Have merged select.html into index.html and renamed select.html as
oldselect.html.
Merged trailDirectionsPage into index.html, and all appears to be okay
except for mapPage.  I think I know the problem there.
Everything works with mapPage.html.  Now to merge mapPage.html into
index.html.
Have integrated mapPage.html into index.html, and everything appears to
work okay.  I want to make my use of the globals function uniform
everywhere.
Had to insert " into index.html to fix an href for selectPage.
Removed all console.log statements except for entering and exiting.
Those statements are commented, so there are no console.log statements
to execute any more.  Next to look at the use of local storage.
Removed all references to local storage.  They are now redundant because
all the html is in one index.html file.
fullMap is no longer a global variable.
zoomedMap is now handled by the globals function.
myRoute is now managed by globals.
stepDisplay is now managed by globals.
stepArray is now managed by globals.  There are no more unmanaged global
variables.  

That's all I was planning to update as of now.

Next is to check out how well this works on an iPad, but I'm not going
to do this now.