doc: s/should/must/

This commit is contained in:
Simon Ruderich 2024-07-23 09:21:14 +02:00
parent 766caf7e07
commit fe3460a899

View file

@ -245,7 +245,7 @@ It is used in two cases:
Here, _TX Request_ is set to 0. Here, _TX Request_ is set to 0.
Empty Frames are not acknowledged. Empty Frames are not acknowledged.
They therefore do not have a _TX sequence number_; this field is reserved and should be set to zero. They therefore do not have a _TX sequence number_; this field is reserved and must be set to zero.
The _RX sequence number_ and all other header fields are used as usual. The _RX sequence number_ and all other header fields are used as usual.