diff --git a/man/sd-login.xml b/man/sd-login.xml
index 5022ff6be30..b2131a9af93 100644
--- a/man/sd-login.xml
+++ b/man/sd-login.xml
@@ -120,11 +120,11 @@
A seat consists of all hardware devices assigned to a specific
workplace. It consists of at least one graphics device, and usually also includes
keyboard, mouse. It can also include video cameras, sound cards and more. Seats
- are identified by seat names, which are short strings (<= 64 chars), that start
- with the four characters seat followed by at least one more
+ are identified by seat names, which are strings (<= 255 characters), that start
+ with the four characters seat followed by at least one
character from the range [a-zA-Z0-9], _ and
- -. They are suitable for inclusion in file names. Seat names
- may or may not be stable and may be reused if a seat becomes available again.
+ -. They are suitable for use as file names. Seat names may or
+ may not be stable and may be reused if a seat becomes available again.
@@ -140,10 +140,10 @@
systemd1
ensures that audit sessions are identical to systemd sessions, and uses the audit
- session ID as session ID in systemd (if auditing is enabled). The session
- identifier too shall be considered a short string (<= 64 chars) consisting only
- of [a-zA-Z0-9], _ and -, suitable for
- inclusion in a file name. Session IDs are unique on the local machine and are
+ session ID as session ID in systemd (if auditing is enabled). In general the
+ session identifier is a short string consisting only of [a-zA-Z0-9],
+ _ and -, suitable for use as a file name.
+ Session IDs are unique on the local machine and are
never reused as long as the machine is online. A user (the way we know it on UNIX)
corresponds to the person using a computer. A single user can have multiple
sessions open at the same time. A user is identified by a numeric user id (UID) or