diff --git a/share/help.txt b/share/help.txt
index f8dbf9a..861dee0 100644
--- a/share/help.txt
+++ b/share/help.txt
@@ -20,6 +20,28 @@ Units:
     ?m                      # metric (SI) (used by default everywhere except US)
     ?u                      # USCS (used by default in US)
 
+View options:
+
+    ?0                      # only current weather
+    ?1                      # current weather + 1 day
+    ?2                      # current weather + 2 days
+    ?n                      # narrow version (only day and night)
+    ?q                      # quiet version (no "Weathre report" text)
+    ?Q                      # superquiet version (no "Weathre report", no city name)
+
+PNG options:
+
+    /paris.png              # generate a PNG file
+    ?p                      # add frame arond the output
+    ?t                      # transparency 150
+    transparency=...        # transparency from 0 to 255 (255 = not transparent)
+
+Options can be combined:
+
+    /Paris?0pq
+    /Paris_0pq.png          # in PNG the file mode are specified after _
+    /Rome_0pq_lang=it.png   # long options are separated with underscore
+
 Localization:
 
     $ curl wttr.in/paris?lang=fr