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+## Project options can be set in native or cross files
+
+A new set of sections has been added to the cross and native files, `[project
+options]` and `[<subproject_name>:project options]`, where `subproject_name`
+is the name of a subproject. Any options that are allowed in the project can
+be set from this section. They have the lowest precedent, and will be
+overwritten by command line arguments.
+
+
+```meson
+option('foo', type : 'string', value : 'foo')
+```
+
+```ini
+[project options]
+foo = 'other val'
+```
+
+```console
+meson build --native-file my.ini
+```
+
+Will result in the option foo having the value `other val`,
+
+```console
+meson build --native-file my.ini -Dfoo='different val'
+```
+
+Will result in the option foo having the value `different val`,
+
+
+Subproject options are assigned like this:
+
+```ini
+[zlib:project options]
+foo = 'some val'
+```