diff --git a/ROADMAP.md b/ROADMAP.md
index fbfce72..053f216 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -1,7 +1,7 @@
 # TODO CONCEPTS
 
 - [x] Functions
-- [ ] imports
+- [x] imports
 - [x] scopes of visibility
 
 - [ ] methods for arrays
@@ -12,7 +12,7 @@
 - [ ] command execution function
 - [ ] function for random
 - [x] delete variable
-- [ ] types conversion
+- [ ] types conversion `in process`
 - [ ] checking variable type
 - [x] checking for the existence of a variable
 - [x] create scopes without if, else, loop
diff --git a/doc/main.md b/doc/main.md
index e68c52c..af9c636 100644
--- a/doc/main.md
+++ b/doc/main.md
@@ -8,6 +8,12 @@
 
 `All posibilities in example.json5`
 
+## How to import modules
+
+```json5
+[{ import: { path: "examples/assertions.onla", as: "assertions" } }]
+```
+
 ## How to print
 
 ```json5
diff --git a/examples/assertions.onla b/examples/assertions.onla
new file mode 100644
index 0000000..904ea20
--- /dev/null
+++ b/examples/assertions.onla
@@ -0,0 +1,11 @@
+//artegoser
+//assertions module for onlang
+[
+  {
+    fn: {
+      name: "eq",
+      args: ["a", "b"],
+      body: [{ return: { comp: [{ var: "a" }, "==", { var: "b" }] } }],
+    },
+  },
+]
diff --git a/examples/calc.json5 b/examples/calc.onla
similarity index 100%
rename from examples/calc.json5
rename to examples/calc.onla
diff --git a/examples/factorial.onla b/examples/factorial.json5
similarity index 61%
rename from examples/factorial.onla
rename to examples/factorial.json5
index 3213992..7ae7912 100644
--- a/examples/factorial.onla
+++ b/examples/factorial.json5
@@ -64,42 +64,54 @@
     },
   },
 
-  {
-    fn: {
-      name: "_eq",
-      args: ["a", "b"],
-      body: [{ return: { comp: [{ var: "a" }, "==", { var: "b" }] } }],
-    },
-  },
+  { import: { path: "examples/assertions.onla", as: "assertions" } },
 
-  ["10! == 3 628 800: ", { _eq: [{ fact: [10] }, 3628800] }],
-  ["11! == 39 916 800: ", { _eq: [{ fact: [11] }, 39916800] }],
+  ["10! == 3 628 800: ", { "assertions.eq": [{ fact: [10] }, 3628800] }],
+  ["11! == 39 916 800: ", { "assertions.eq": [{ fact: [11] }, 39916800] }],
 
-  ["12! == 479 001 600: ", { _eq: [{ fact: [12] }, 479001600] }],
-  ["13! == 6 227 020 800: ", { _eq: [{ fact: [13] }, 6227020800] }],
+  ["12! == 479 001 600: ", { "assertions.eq": [{ fact: [12] }, 479001600] }],
+  ["13! == 6 227 020 800: ", { "assertions.eq": [{ fact: [13] }, 6227020800] }],
 
-  ["14! == 87 178 291 200: ", { _eq: [{ fact: [14] }, 87178291200] }],
-  ["15! == 1 307 674 368 000: ", { _eq: [{ fact: [15] }, 1307674368000] }],
+  [
+    "14! == 87 178 291 200: ",
+    { "assertions.eq": [{ fact: [14] }, 87178291200] },
+  ],
+  [
+    "15! == 1 307 674 368 000: ",
+    { "assertions.eq": [{ fact: [15] }, 1307674368000] },
+  ],
 
-  ["16! == 20 922 789 888 000: ", { _eq: [{ fact: [16] }, 20922789888000] }],
-  ["17! == 355 687 428 096 000: ", { _eq: [{ fact: [17] }, 355687428096000] }],
+  [
+    "16! == 20 922 789 888 000: ",
+    { "assertions.eq": [{ fact: [16] }, 20922789888000] },
+  ],
+  [
+    "17! == 355 687 428 096 000: ",
+    { "assertions.eq": [{ fact: [17] }, 355687428096000] },
+  ],
 
   [
     "18! == 6 402 373 705 728 000: ",
-    { _eq: [{ fact: [18] }, 6402373705728000] },
+    { "assertions.eq": [{ fact: [18] }, 6402373705728000] },
   ],
   [
     "19! == 121 645 100 408 832 000: ",
-    { _eq: [{ fact: [19] }, 121645100408832000] },
+    { "assertions.eq": [{ fact: [19] }, 121645100408832000] },
   ],
 
   [
     "20! == 2 432 902 008 176 640 000: ",
-    { _eq: [{ fact: [20] }, 2432902008176640000] },
+    { "assertions.eq": [{ fact: [20] }, 2432902008176640000] },
   ],
   "",
-  ["(loop) 10! == 3 628 800: ", { _eq: [{ fact_loop: [10] }, 3628800] }],
-  ["(loop) 11! == 39 916 800: ", { _eq: [{ fact_loop: [11] }, 39916800] }],
+  [
+    "(loop) 10! == 3 628 800: ",
+    { "assertions.eq": [{ fact_loop: [10] }, 3628800] },
+  ],
+  [
+    "(loop) 11! == 39 916 800: ",
+    { "assertions.eq": [{ fact_loop: [11] }, 39916800] },
+  ],
 
   // [
   //   "21! == 51 090 942 171 709 440 000: ",