docs(PARAMS): update comments for clarity

ab-nginx.params.template

@@ -7,20 +7,20 @@
 
 
 ### Network options
-# If you want to specify a network to which this container should bind or one 
+# If you want to specify a network to which this container should bind or one
-#   that should be created, then use this variable. If you don't know what this 
+#   that should be created, then use this variable. If you don't know what this
-#   means or if you just want to use the default, leave this line/variable 
+#   means or if you just want to use the default, leave this line/variable
 #   commented-out.
 #NETWORK=nginx_network
 
-# If you want to specify a particular IP subnet for the network to be created 
+# If you want to specify a particular IP subnet for the network to be created
-#   as per the above variable, specify it here.  Again, if you don't know what 
+#   as per the above variable, specify it here.  Again, if you don't know what
 #   this means, just leave this commented-out.
 #SUBNET='172.31.254.0/24'
 
 
 ### Timezone
-# This doesn't impact any functionality of the container, but it does make your 
+# This doesn't impact any functionality of the container, but it does make your
 #   logs easier to understand if they report the correct local time, right?
 #   (https://en.wikipedia.org/wiki/List_of_tz_database_time_zones)
 TZ=Area/Location
@@ -28,64 +28,65 @@ TZ=Area/Location
 
 ### NGINX options
 # Hostnames to which this instance of NGINX should answer:
-# By default, this is set to '_' meaning 'match anything'.  However, that won't 
+# By default, this is set to '_' meaning 'match anything'.  However, that won't
-#   work if you're using SSL certificates! Multiple hostnames must be space 
+#   work if you're using SSL certificates! Multiple hostnames must be space
 #   delimited and "enclosed in quotes".
-# This is NOT required if you are supplying your own server blocks via 
+# This is NOT required if you are supplying your own server blocks via
 #   'SERVERS_DIR'
 HOSTNAMES="domain.tld www.domain.tld server.domain.tld alt.domain.tld"
 
-# Ports to expose on the HOST machine (container ALWAYS internally uses 80/443):
+# Ports to listen on:
-# If you need to use ports other than HTTP=80 and HTTPS=443, remember to set up 
+# If you need to use ports other than HTTP=80 and HTTPS=443, remember to set up
-#   your server blocks accordingly! See 'test_secured.conf.disabled' in the 
+#   your server blocks accordingly! See 'test_secured.conf.disabled' in the
-#   container if you need help.  If you're using the 'test blocks', they 
+#   container if you need help.  If you're using the default configuration, the
-#   automatically adjust for non-standard ports
+#   'test blocks' automatically adjust for non-standard ports.
-# If you want to use the defaults, either leave these lines as-is, comment them 
+# If you want to use the defaults, either leave these lines as-is, comment them
 #   out or just delete them.
 #HTTP_PORT=80
 #HTTPS_PORT=443
 
 # Access logging (global preference):
-# Unless overridden in a server/location block, access logging will be handled 
+# Unless overridden in a server/location block, access logging will be handled
-#   according to this setting.  Default is OFF.  Choices are 'ON' or 'OFF'.  
+#   according to this setting.  Default is OFF.  Choices are 'ON' or 'OFF'.
 #   Logs will be printed to the console so they are accessible via
 #   'docker logs ...'
 ACCESS_LOG=OFF
 
 ### Content files
-# Whatever you specify here will replace the default files in the container 
+# Whatever you specify here will replace the default files in the container
-#   with your content/configurations.
+#   with your content/configurations. You may comment any/all of the following
+#   lines to disable them use the container defaults.
 
 # Specify a directory containing your NGINX configurations (if any)
-#   Remember that these will be all be applied in the HTTP configuration 
+#   Remember that these will be all be applied in the HTTP configuration
 #   context.
-# Only files with a ".conf" extension will be loaded!  If you want to disable a 
+# Only files with a ".conf" extension will be loaded!  If you want to disable a
-#   file, simply change it's extension (i.e. '.conf.disabled').
+#   file, simply change its extension (i.e. '.conf.disabled').
 CONFIG_DIR=$(pwd)/config
 
 # Specify a directory containing your NGINX server-block configurations (if any)
-# If you are just serving static content from the 'webroot', you can use the 
+# If you are just serving static content from the 'webroot', you can use the
-#   hard-coded 'test blocks' in the container and specify a webroot with your 
+#   hard-coded 'test blocks' in the container and specify a webroot with your
 #   files below.
-# More likely, you will have your own server blocks.  Remember, files are 
+# More likely, you will have your own server blocks.  Remember, files are
 #   processed in order so consider starting file names with numbers
 #   (i.e. 00-first_server.conf, 05-second_server.conf)
-# Only files with a ".conf" extension will be loaded!  If you want to disable a 
+# Only files with a ".conf" extension will be loaded!  If you want to disable a
-#   file, simply change it's extension (i.e. '.conf.disabled').
+#   file, simply change its extension (i.e. '.conf.disabled').
 SERVERS_DIR=$(pwd)/sites
 
-# Specify a directory containing 'snippets' of NGINX code you want/need to 
+# Specify a directory containing 'snippets' of NGINX code you want/need to
-#   reference in various other configuration files. Pointers to additional SSL 
+#   reference in various other configuration files. Pointers to additional SSL
 #   certificates for other hosted domains is a good example of this.
 SNIPPETS_DIR=$(pwd)/snippets
 
-# Specify a directory that contains files for your 'webroot'.  This includes 
+# Specify a directory that contains files for your 'webroot'.  This includes
 #   things like HTML, CSS, etc.
 WEBROOT_DIR=/var/www
 
 
 ### SSL options:
-# Enable HSTS only AFTER you've tested SSL implementation!  Container sets the 
+# Enable HSTS only AFTER you've tested SSL implementation!  Container sets the
 #   header to require SSL for 6 months! Subdomains are NOT included.
 HSTS=FALSE
 
@@ -94,7 +95,7 @@ HSTS=FALSE
 TLS13_ONLY=FALSE
 
 ### Certificate files to be bind-mounted
-# Remember, if you are mounting symlinks (like when using Let's Encrypt), you 
+# Remember, if you are mounting symlinks (like when using Let's Encrypt), you
 #   MUST specify the full path of the symlink so the target is resolved!
 # DH (Diffie-Hellman Parameters file) is only required if using TLS 1.2
 #SSL_CERT=/path/to/your/ssl-certificate/fullchain.pem