diff --git a/mers/Cargo.toml b/mers/Cargo.toml
index 7bfc3c4..3c30102 100644
--- a/mers/Cargo.toml
+++ b/mers/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mers"
-version = "0.9.9"
+version = "0.9.10"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 description = "dynamically typed but type-checked programming language"
@@ -15,7 +15,7 @@ default = ["colored-output"]
 colored-output = ["mers_lib/ecolor-term", "mers_lib/pretty-print", "dep:colored"]
 
 [dependencies]
-mers_lib = "0.9.9"
+mers_lib = "0.9.10"
 # mers_lib = { path = "../mers_lib" }
 clap = { version = "4.3.19", features = ["derive"] }
 colored = { version = "2.1.0", optional = true }
diff --git a/mers_lib/Cargo.toml b/mers_lib/Cargo.toml
index c7a21bb..9ea9923 100755
--- a/mers_lib/Cargo.toml
+++ b/mers_lib/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mers_lib"
-version = "0.9.9"
+version = "0.9.10"
 edition = "2021"
 license = "MIT OR Apache-2.0"
 description = "library to use the mers language in other projects"
diff --git a/mers_lib/src/program/configs/with_base.rs b/mers_lib/src/program/configs/with_base.rs
index b9eb4a9..67373cd 100755
--- a/mers_lib/src/program/configs/with_base.rs
+++ b/mers_lib/src/program/configs/with_base.rs
@@ -92,9 +92,6 @@ impl Config {
                 std::thread::sleep(sleep_dur);
                 Ok(())
             }))
-            .add_var("exit", func_end(|code: IntR<INT_MIN, INT_MAX>, _| {
-                std::process::exit(code.0.try_into().unwrap_or(255));
-            }))
             .add_var("panic", func_err(|message: &str, _| {
                 CheckError::from(message)
             }))
diff --git a/mers_lib/src/program/configs/with_stdio.rs b/mers_lib/src/program/configs/with_stdio.rs
index 935f1a4..fb5a762 100755
--- a/mers_lib/src/program/configs/with_stdio.rs
+++ b/mers_lib/src/program/configs/with_stdio.rs
@@ -4,12 +4,19 @@ use std::{
 };
 
 use crate::{
-    data::{self, Data, MersDataWInfo, Type},
+    data::{
+        self,
+        int::{INT_MAX, INT_MIN},
+        Data, MersDataWInfo, Type,
+    },
     program::{self, run::CheckInfo},
 };
 
 use super::{
-    gen::{function::func, OneOrNone},
+    gen::{
+        function::{func, func_end},
+        IntR, OneOrNone,
+    },
     Config,
 };
 
@@ -20,6 +27,7 @@ impl Config {
     /// `eprint: fn` prints to stderr
     /// `debug: fn` debug-prints any value
     /// `read_line: fn` reads a line from stdin and returns it
+    /// `exit: fn` exits the program with the given exit code. returns `<unreachable>`, just like `panic`
     pub fn with_stdio(self) -> Self {
         self
             //     .add_var(
@@ -50,6 +58,12 @@ impl Config {
             //         inner_statements: None,
             //     },
             // )
+            .add_var(
+                "exit",
+                func_end(|code: IntR<INT_MIN, INT_MAX>, _| {
+                    std::process::exit(code.0.try_into().unwrap_or(255));
+                }),
+            )
             .add_var(
                 "read_line",
                 func(|_: (), _| {