diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7a72ab0..5b79316 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,10 +16,12 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        neovim: [v0.10.4, Nightly]
+        neovim: [v0.10.4, v0.11.1, Nightly]
         include:
           - neovim: v0.10.4
             features: "--features neovim-0-10"
+          - neovim: v0.11.1
+            features: "--features neovim-0-11"
           - neovim: Nightly
             features: "--features neovim-nightly"
 
diff --git a/Cargo.toml b/Cargo.toml
index 6021373..36a34b2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,7 +43,8 @@ rustdoc-args = ["--cfg", "docsrs"]
 
 [features]
 neovim-0-10 = ["api/neovim-0-10"]
-neovim-nightly = ["neovim-0-10", "api/neovim-nightly"]
+neovim-0-11 = ["api/neovim-0-10", "api/neovim-0-11"]
+neovim-nightly = ["neovim-0-11", "api/neovim-nightly"]
 
 libuv = ["dep:libuv"]
 mlua = ["dep:mlua"]
diff --git a/build.rs b/build.rs
index df9078c..d2f3bab 100644
--- a/build.rs
+++ b/build.rs
@@ -1,6 +1,11 @@
-#[cfg(not(any(feature = "neovim-0-10", feature = "neovim-nightly")))]
+#[cfg(not(any(
+    feature = "neovim-0-10",
+    feature = "neovim-0-11",
+    feature = "neovim-nightly"
+)))]
 compile_error!(
-    "You must enable one of the features: neovim-0-10, neovim-nightly"
+    "You must enable one of the features: neovim-0-10, neovim-0-11, \
+     neovim-nightly"
 );
 
 fn main() {
diff --git a/crates/api/Cargo.toml b/crates/api/Cargo.toml
index 6cbd640..974895f 100644
--- a/crates/api/Cargo.toml
+++ b/crates/api/Cargo.toml
@@ -9,7 +9,8 @@ license.workspace = true
 
 [features]
 neovim-0-10 = []
-neovim-nightly = ["neovim-0-10"]
+neovim-0-11 = ["neovim-0-10"]
+neovim-nightly = ["neovim-0-11"]
 
 [dependencies]
 luajit = { workspace = true }
diff --git a/crates/api/src/deprecated.rs b/crates/api/src/deprecated.rs
index 4d59fd1..c1b218e 100644
--- a/crates/api/src/deprecated.rs
+++ b/crates/api/src/deprecated.rs
@@ -14,7 +14,7 @@ use crate::{Buffer, Window};
 ///
 /// [1]: https://neovim.io/doc/user/api.html#nvim_exec()
 #[cfg_attr(
-    feature = "neovim-nightly",
+    feature = "neovim-0-11", // On 0.11 and Nightly.
     deprecated(since = "0.5.0", note = "use `exec2` instead")
 )]
 pub fn exec(src: &str, output: bool) -> Result<Option<String>> {
@@ -36,7 +36,7 @@ pub fn exec(src: &str, output: bool) -> Result<Option<String>> {
 ///
 /// [1]: https://neovim.io/doc/user/api.html#nvim_get_current_win()
 #[cfg_attr(
-    feature = "neovim-nightly",
+    feature = "neovim-0-11", // On 0.11 and Nightly.
     deprecated(since = "0.5.0", note = "use `get_hl` instead")
 )]
 pub fn get_hl_by_id(hl_id: u32, rgb: bool) -> Result<HighlightInfos> {
@@ -55,7 +55,7 @@ pub fn get_hl_by_id(hl_id: u32, rgb: bool) -> Result<HighlightInfos> {
 ///
 /// [1]: https://neovim.io/doc/user/api.html#nvim_get_hl_by_name()
 #[cfg_attr(
-    feature = "neovim-nightly",
+    feature = "neovim-0-11", // On 0.11 and Nightly.
     deprecated(since = "0.5.0", note = "use `get_hl` instead")
 )]
 pub fn get_hl_by_name(name: &str, rgb: bool) -> Result<HighlightInfos> {
@@ -78,7 +78,7 @@ pub fn get_hl_by_name(name: &str, rgb: bool) -> Result<HighlightInfos> {
 ///
 /// [1]: https://neovim.io/doc/user/api.html#nvim_get_option()
 #[cfg_attr(
-    feature = "neovim-nightly",
+    feature = "neovim-0-11", // On 0.11 and Nightly.
     deprecated(since = "0.5.0", note = "use `get_option_value` instead")
 )]
 pub fn get_option<Opt>(name: &str) -> Result<Opt>
@@ -97,7 +97,7 @@ where
 ///
 /// [1]: https://neovim.io/doc/user/api.html#nvim_get_option_info()
 #[cfg_attr(
-    feature = "neovim-nightly",
+    feature = "neovim-0-11", // On 0.11 and Nightly.
     deprecated(since = "0.5.0", note = "use `get_option_info2` instead")
 )]
 pub fn get_option_info(name: &str) -> Result<OptionInfos> {
@@ -115,7 +115,7 @@ pub fn get_option_info(name: &str) -> Result<OptionInfos> {
 ///
 /// [1]: https://neovim.io/doc/user/api.html#nvim_set_option()
 #[cfg_attr(
-    feature = "neovim-nightly",
+    feature = "neovim-0-11", // On 0.11 and Nightly.
     deprecated(since = "0.5.0", note = "use `set_option_value` instead")
 )]
 pub fn set_option<Opt>(name: &str, value: Opt) -> Result<()>
@@ -142,7 +142,7 @@ impl Buffer {
     ///
     /// [1]: https://neovim.io/doc/user/api.html#nvim_buf_get_option()
     #[cfg_attr(
-        feature = "neovim-nightly",
+        feature = "neovim-0-11", // On 0.11 and Nightly.
         deprecated(since = "0.5.0", note = "use `get_option_value` instead")
     )]
     pub fn get_option<Opt>(&self, name: &str) -> Result<Opt>
@@ -164,7 +164,7 @@ impl Buffer {
     ///
     /// [1]: https://neovim.io/doc/user/api.html#nvim_buf_set_option()
     #[cfg_attr(
-        feature = "neovim-nightly",
+        feature = "neovim-0-11", // On 0.11 and Nightly.
         deprecated(since = "0.5.0", note = "use `set_option_value` instead")
     )]
     pub fn set_option<V>(&mut self, name: &str, value: V) -> Result<()>
@@ -193,7 +193,7 @@ impl Window {
     ///
     /// [1]: https://neovim.io/doc/user/api.html#nvim_win_get_option()
     #[cfg_attr(
-        feature = "neovim-nightly",
+        feature = "neovim-0-11", // On 0.11 and Nightly.
         deprecated(since = "0.5.0", note = "use `get_option_value` instead")
     )]
     pub fn get_option<Opt>(&self, name: &str) -> Result<Opt>
@@ -215,7 +215,7 @@ impl Window {
     ///
     /// [1]: https://neovim.io/doc/user/api.html#nvim_win_set_option()
     #[cfg_attr(
-        feature = "neovim-nightly",
+        feature = "neovim-0-11", // On 0.11 and Nightly.
         deprecated(since = "0.5.0", note = "use `set_option_value` instead")
     )]
     pub fn set_option<Opt>(&mut self, name: &str, value: Opt) -> Result<()>
diff --git a/crates/api/src/ffi/vim.rs b/crates/api/src/ffi/vim.rs
index c6dd637..7f55a71 100644
--- a/crates/api/src/ffi/vim.rs
+++ b/crates/api/src/ffi/vim.rs
@@ -166,7 +166,8 @@ extern "C" {
 
     // https://github.com/neovim/neovim/blob/v0.10.0/src/nvim/api/vim.c#L360
     pub(crate) fn nvim_input(
-        #[cfg(feature = "neovim-nightly")] channel_id: u64,
+        #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
+        channel_id: u64,
         keys: NvimStr,
     ) -> Integer;
 
diff --git a/crates/api/src/opts/create_augroup.rs b/crates/api/src/opts/create_augroup.rs
index 8cce713..5a3e590 100644
--- a/crates/api/src/opts/create_augroup.rs
+++ b/crates/api/src/opts/create_augroup.rs
@@ -1,5 +1,5 @@
 /// Options passed to [`create_augroup()`](crate::create_augroup).
-#[cfg(feature = "neovim-nightly")] // Only on Nightly.
+#[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
 #[derive(Clone, Debug, Default, macros::OptsBuilder)]
 #[repr(C)]
 pub struct CreateAugroupOpts {
@@ -12,14 +12,14 @@ pub struct CreateAugroupOpts {
 }
 
 /// Options passed to [`create_augroup()`](crate::create_augroup).
-#[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
+#[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
 #[derive(Clone, Debug, Default)]
 #[repr(C)]
 pub struct CreateAugroupOpts {
     clear: types::Object,
 }
 
-#[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
+#[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
 impl CreateAugroupOpts {
     #[inline(always)]
     pub fn builder() -> CreateAugroupOptsBuilder {
@@ -27,11 +27,11 @@ impl CreateAugroupOpts {
     }
 }
 
-#[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
+#[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
 #[derive(Clone, Default)]
 pub struct CreateAugroupOptsBuilder(CreateAugroupOpts);
 
-#[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
+#[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
 impl CreateAugroupOptsBuilder {
     /// Whether to clear existing commands if the group already exists.
     #[inline]
diff --git a/crates/api/src/opts/set_extmark.rs b/crates/api/src/opts/set_extmark.rs
index 5db02ad..9b0cc77 100644
--- a/crates/api/src/opts/set_extmark.rs
+++ b/crates/api/src/opts/set_extmark.rs
@@ -1,7 +1,7 @@
 use types::{Array, Integer};
 
 use crate::trait_utils::StringOrListOfStrings;
-#[cfg(feature = "neovim-nightly")]
+#[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
 use crate::types::VirtLinesOverflow;
 use crate::types::{ExtmarkHlMode, ExtmarkVirtTextPosition};
 
@@ -28,8 +28,8 @@ pub struct SetExtmarkOpts {
     end_col: types::Integer,
 
     /// Name of the highlight group used to highlight this mark.
-    #[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
-    #[cfg_attr(docsrs, doc(cfg(not(feature = "neovim-nightly"))))]
+    #[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
+    #[cfg_attr(docsrs, doc(cfg(not(feature = "neovim-0-11"))))]
     #[builder(
         generics = "Hl: crate::HlGroup",
         argtype = "Hl",
@@ -38,8 +38,8 @@ pub struct SetExtmarkOpts {
     hl_group: types::HlGroupId,
 
     /// Name of the highlight group used to highlight this mark.
-    #[cfg(feature = "neovim-nightly")] // Only on Nightly.
-    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-nightly")))]
+    #[cfg(feature = "neovim-0-11")] // Only on Nightly.
+    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-0-11")))]
     #[builder(
         generics = "Hl: crate::SetExtmarkHlGroup",
         argtype = "Hl",
@@ -135,8 +135,8 @@ pub struct SetExtmarkOpts {
     virt_lines_leftcol: types::Boolean,
 
     /// Controls how to handle virtual lines wider than the window.
-    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-nightly")))]
-    #[cfg(feature = "neovim-nightly")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-0-11")))]
+    #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
     #[builder(argtype = "VirtLinesOverflow", inline = "{0}.into()")]
     virt_lines_overflow: types::String,
 
@@ -196,8 +196,8 @@ pub struct SetExtmarkOpts {
 
     /// When called, lines in the range are not drawn at all (according to
     /// `conceallevel`); the next unconcealed line is drawn instead.
-    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-nightly")))]
-    #[cfg(feature = "neovim-nightly")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-0-11")))]
+    #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
     #[builder(argtype = "()", inline = "{let _ = {0}; types::String::new()}")]
     conceal_lines: types::String,
 
diff --git a/crates/api/src/opts/set_highlight.rs b/crates/api/src/opts/set_highlight.rs
index bff9928..8735c2b 100644
--- a/crates/api/src/opts/set_highlight.rs
+++ b/crates/api/src/opts/set_highlight.rs
@@ -76,7 +76,7 @@ pub struct SetHighlightOpts {
     #[builder(skip)]
     sp: Object,
 
-    #[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
+    #[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
     #[builder(
         generics = "Hl: crate::HlGroup",
         argtype = "Hl",
@@ -84,7 +84,7 @@ pub struct SetHighlightOpts {
     )]
     link: Object,
 
-    #[cfg(feature = "neovim-nightly")] // Only on Nightly.
+    #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
     #[builder(
         generics = "Hl: crate::HlGroup",
         argtype = "Hl",
@@ -92,11 +92,11 @@ pub struct SetHighlightOpts {
     )]
     link: types::HlGroupId,
 
-    #[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
+    #[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
     #[builder(skip)]
     global_link: Object,
 
-    #[cfg(feature = "neovim-nightly")] // Only on Nightly.
+    #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
     #[builder(skip)]
     global_link: types::HlGroupId,
 
diff --git a/crates/api/src/trait_utils.rs b/crates/api/src/trait_utils.rs
index 07502e9..00d9736 100644
--- a/crates/api/src/trait_utils.rs
+++ b/crates/api/src/trait_utils.rs
@@ -169,13 +169,13 @@ impl HlGroup for &str {
 
 /// A trait implemented by types that can be passed to
 /// [`SetExtmarkOptsBuilder::hl_group`](crate::opts::SetExtmarkOptsBuilder::hl_group).
-#[cfg(feature = "neovim-nightly")] // Only on Nightly.
-#[cfg_attr(docsrs, doc(cfg(feature = "neovim-nightly")))]
+#[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
+#[cfg_attr(docsrs, doc(cfg(feature = "neovim-0-11")))]
 pub trait SetExtmarkHlGroup {
     fn into_object(self) -> Object;
 }
 
-#[cfg(feature = "neovim-nightly")] // Only on Nightly.
+#[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
 impl SetExtmarkHlGroup for Integer {
     #[inline]
     fn into_object(self) -> Object {
@@ -183,7 +183,7 @@ impl SetExtmarkHlGroup for Integer {
     }
 }
 
-#[cfg(feature = "neovim-nightly")] // Only on Nightly.
+#[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
 impl SetExtmarkHlGroup for &str {
     #[inline]
     fn into_object(self) -> Object {
@@ -191,7 +191,7 @@ impl SetExtmarkHlGroup for &str {
     }
 }
 
-#[cfg(feature = "neovim-nightly")] // Only on Nightly.
+#[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
 impl<T: StringOrInt> SetExtmarkHlGroup for Vec<T> {
     #[inline]
     fn into_object(self) -> Object {
diff --git a/crates/api/src/types/cmd_infos.rs b/crates/api/src/types/cmd_infos.rs
index d9f0494..ceb3944 100644
--- a/crates/api/src/types/cmd_infos.rs
+++ b/crates/api/src/types/cmd_infos.rs
@@ -179,19 +179,19 @@ pub(crate) struct ParseCmdOutput {
     nargs: Object,
 
     // Only on 0.10.
-    #[cfg(not(feature = "neovim-nightly"))]
+    #[cfg(not(feature = "neovim-0-11"))]
     addr: Object,
 
-    // Only on Nightly.
-    #[cfg(feature = "neovim-nightly")]
+    // On 0.11 and Nightly.
+    #[cfg(feature = "neovim-0-11")]
     addr: NvimString,
 
     // Only on 0.10.
-    #[cfg(not(feature = "neovim-nightly"))]
+    #[cfg(not(feature = "neovim-0-11"))]
     nextcmd: Object,
 
     // Only on 0.10.
-    #[cfg(feature = "neovim-nightly")]
+    #[cfg(feature = "neovim-0-11")]
     nextcmd: NvimString,
 }
 
@@ -279,9 +279,9 @@ impl TryFrom<ParseCmdOutput> for CmdInfos {
         }
 
         Ok(Self {
-            #[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
+            #[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
             addr: utils::none_literal_is_none(Deserializer::new(addr))?,
-            #[cfg(feature = "neovim-nightly")] // Only on Nightly.
+            #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
             addr: utils::none_literal_is_none(Deserializer::new(addr.into()))?,
             args: deserialize(args)?,
             bang: deserialize(bang)?,
@@ -290,11 +290,11 @@ impl TryFrom<ParseCmdOutput> for CmdInfos {
             magic: deserialize(magic)?,
             mods: deserialize(mods)?,
             nargs: deserialize(nargs)?,
-            #[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
+            #[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
             nextcmd: utils::empty_string_is_none(Deserializer::new(
                 nextcmd,
             ))?,
-            #[cfg(feature = "neovim-nightly")] // Only on Nightly.
+            #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
             nextcmd: utils::empty_string_is_none(Deserializer::new(
                 nextcmd.into(),
             ))?,
diff --git a/crates/api/src/types/extmark_infos.rs b/crates/api/src/types/extmark_infos.rs
index a4b4766..51f8aca 100644
--- a/crates/api/src/types/extmark_infos.rs
+++ b/crates/api/src/types/extmark_infos.rs
@@ -23,13 +23,13 @@ pub struct ExtmarkInfos {
     #[serde(default)]
     pub hl_eol: Option<bool>,
 
-    #[cfg(not(feature = "neovim-nightly"))] // Only on 0.10.
-    #[cfg_attr(docsrs, doc(cfg(not(feature = "neovim-nightly"))))]
+    #[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
+    #[cfg_attr(docsrs, doc(cfg(not(feature = "neovim-0-11"))))]
     #[serde(default)]
     pub hl_group: Option<String>,
 
-    #[cfg(feature = "neovim-nightly")] // Only on Nightly.
-    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-nightly")))]
+    #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
+    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-0-11")))]
     #[serde(default)]
     pub hl_group: Option<super::OneOrMore<String>>,
 
diff --git a/crates/api/src/types/window_config.rs b/crates/api/src/types/window_config.rs
index 42befde..4c29dcd 100644
--- a/crates/api/src/types/window_config.rs
+++ b/crates/api/src/types/window_config.rs
@@ -53,8 +53,8 @@ pub struct WindowConfig {
 
     pub hide: Option<bool>,
 
-    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-nightly")))]
-    #[cfg(feature = "neovim-nightly")] // Only on Nightly.
+    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-0-11")))]
+    #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
     #[serde(default)]
     pub mouse: bool,
 
@@ -294,8 +294,8 @@ pub struct WindowOpts {
     bufpos: Array,
     external: Boolean,
     focusable: Boolean,
-    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-nightly")))]
-    #[cfg(feature = "neovim-nightly")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "neovim-0-11")))]
+    #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
     mouse: Boolean,
     vertical: Boolean,
     zindex: Integer,
@@ -361,7 +361,7 @@ impl From<&WindowConfig> for WindowOpts {
             builder.focusable(focusable);
         }
 
-        #[cfg(feature = "neovim-nightly")]
+        #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
         builder.mouse(config.mouse);
 
         if let Some(vertical) = config.vertical {
@@ -429,7 +429,7 @@ impl TryFrom<WindowOpts> for WindowConfig {
             footer_pos,
             height,
             hide,
-            #[cfg(feature = "neovim-nightly")]
+            #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
             mouse,
             noautocmd,
             relative,
@@ -503,7 +503,7 @@ impl TryFrom<WindowOpts> for WindowConfig {
             ))?,
             height: deserialize(height)?,
             hide: deserialize(hide)?,
-            #[cfg(feature = "neovim-nightly")]
+            #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
             mouse,
             noautocmd: deserialize(noautocmd)?,
             relative,
diff --git a/crates/api/src/vim.rs b/crates/api/src/vim.rs
index 1d37fa2..1b720f8 100644
--- a/crates/api/src/vim.rs
+++ b/crates/api/src/vim.rs
@@ -483,7 +483,7 @@ where
 {
     unsafe {
         nvim_input(
-            #[cfg(feature = "neovim-nightly")]
+            #[cfg(feature = "neovim-0-11")] // On 0.11 and Nightly.
             LUA_INTERNAL_CALL,
             keys.into().as_nvim_str(),
         )
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index 9f9d875..8f62bc8 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -10,7 +10,8 @@ crate-type = ["cdylib"]
 [features]
 default = ["neovim-0-10"]
 neovim-0-10 = ["nvim-oxi/neovim-0-10"]
-neovim-nightly = ["neovim-0-10", "nvim-oxi/neovim-nightly"]
+neovim-0-11 = ["neovim-0-10", "nvim-oxi/neovim-0-11"]
+neovim-nightly = ["neovim-0-11", "nvim-oxi/neovim-nightly"]
 
 [dependencies]
 all_asserts = "2.3"
diff --git a/tests/src/api/global.rs b/tests/src/api/global.rs
index 12f4b0f..a0444c5 100644
--- a/tests/src/api/global.rs
+++ b/tests/src/api/global.rs
@@ -285,7 +285,7 @@ fn set_get_del_var() {
 }
 
 // `api::{get,set}_option()` were deprecated on 0.11, so only test on 0.10.
-#[cfg(not(feature = "neovim-nightly"))]
+#[cfg(not(feature = "neovim-0-11"))] // Only on 0.10.
 #[nvim_oxi::test]
 fn set_get_option() {
     api::set_option("modified", true).unwrap();