graphql.md: some minor clarifications

1 files changed, 4 insertions, 1 deletions

diff --git a/graphql.md b/graphql.md
index 4825228..6a60aab 100644
--- a/graphql.md
+++ b/graphql.md
@@ -145,7 +145,8 @@ The total complexity of your request is capped to 200 by default; some services
 permit more.
 
 Additionally, the total time spent processing your request is capped to 3
-seconds by default, however, more time is permitted for file uploads.
+seconds by default, though more time is permitted for resolvers handling file
+uploads.
 
 ## Cursors
 
@@ -200,6 +201,8 @@ backwards-compatible include:
 - Adding new resolvers
 - Adding new fields to existing types
 - Adding new members to enums
+- Adding new optional parameters to existing resolvers
+- Adding new optional fields to existing input types
 
 The special version `0.0.0` indicates an API which is still undergoing its
 initial design work, and provides no stability guarantees whatosever.