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diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index c0e1d862a..ff8b812ef 100644
--- a/man/systemd.exec.xml
+++ b/man/systemd.exec.xml
@@ -1,4 +1,3 @@
-
@@ -77,6 +76,27 @@
configuration options are configured in the [Service],
[Socket], [Mount], or [Swap] sections, depending on the unit
type.
+
+ Processes started by the system systemd instance
+ are executed in a clean environment in which only the
+ $PATH and $LANG
+ variables are set by default. In order to add
+ additional variables, see the
+ Environment= and
+ EnvironmentFile= options below. To
+ specify variables globally, see
+ DefaultEnvironment= in
+ systemd-system.conf5
+ or the kernel option
+ systemd.setenv= in
+ systemd1. Processes
+ started by the user systemd instances inherit all
+ environment variables from the user systemd instance,
+ and have $HOME,
+ $USER,
+ $XDG_RUNTIME_DIR defined, among
+ others. In addition, $MANAGERPID
+ contains the PID of the user systemd instance.
@@ -327,8 +347,8 @@
absolute filename or wildcard
expression, optionally prefixed with
-, which indicates
- that if the file does not exist it
- won't be read and no error or warning
+ that if the file does not exist, it
+ will not be read and no error or warning
message is logged. This option may be
specified more than once in which case
all specified files are read. If the
@@ -828,7 +848,15 @@
the empty string is assigned to this
option the specific list is reset, and
all prior assignments have no
- effect.
+ effect.
+ Paths in
+ ReadOnlyDirectories=
+ and
+ InaccessibleDirectories=
+ may be prefixed with
+ -, in which case
+ they will be ignored when they do not
+ exist.
@@ -964,7 +992,7 @@
sigreturn,
exit_group,
exit system calls
- are implicitly whitelisted and don't
+ are implicitly whitelisted and do not
need to be listed explicitly. This
option may be specified more than once
in which case the filter masks are