Env.sh sample update

env.sh.sample

@@ -29,10 +29,11 @@ export GOOGLE_CALENDAR_ID=primary
 # Or if you use Outlook Calendar, use python3 outlook_util.py to get available Calendar IDs
 # export OUTLOOK_CALENDAR_ID=AQMkAxyz...
 
-# Most new Waveshare are 2, older ones are 1
+# Most new Waveshare are 2, older ones are 1 (SKU: 13504)
+# For 7.5 inch B with Red, use "2B" (SKU: 13505)
 export WAVESHARE_EPD75_VERSION=2
 
-# You can set this to DEBUG for troubleshooting, otherwise leave it at INFO. 
+# You can set this to DEBUG for troubleshooting, otherwise leave it at INFO.
 export LOG_LEVEL=INFO
 # How long, in seconds, to cache weather for
 export WEATHER_TTL=3600
@@ -48,12 +49,12 @@ export CALENDAR_TTL=3600
 # file for your region, using that FIPS code.
 # export ALERT_MET_EIREANN_FEED_URL=https://www.met.ie/Open_Data/json/warning_EI07.json
 
-# Weather.gov Alerts requires self identification 
+# Weather.gov Alerts requires self identification
 # export ALERT_WEATHERGOV_SELF_IDENTIFICATION=you@example.com
 
 
 # Which layout to use. 1, 2, 3...
 export SCREEN_LAYOUT=1
 
-# Include all calendar events from today, even if they are past.  
-# CALENDAR_INCLUDE_PAST_EVENTS_FOR_TODAY=1
+# Include all calendar events from today, even if they are past.
+# CALENDAR_INCLUDE_PAST_EVENTS_FOR_TODAY=1