diff --git a/docs/functions/core/flags/getters/why2_get_default_memory_identifier.md b/docs/functions/core/flags/getters/why2_get_default_memory_identifier.md
new file mode 100644
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@@ -0,0 +1,37 @@
+<!--
+This is part of WHY2
+Copyright (C) 2022 Václav Šmejkal
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+-->
+
+# why2_get_default_memory_identifier
+
+## Parameters
+
+*This functions doesn't take any parameters.*
+
+## Attributes
+
+|                     |                                                |
+| ------------------  | ---------------------------------------------- |
+| **Return type**     | `char *`                                         |
+| **Header comment**  | *This functions doesn't have any description.* |
+| **Added in commit** | [`aa6b484363ad609f1bf1ff5ee539723d9417f48a`](https://github.com/ENGO150/WHY2/commit/aa6b484363ad609f1bf1ff5ee539723d9417f48a) |
+
+## Description
+
+Returns string, which is by default used in garbage collector for identifying (separating) nodes.
+
+Every allocation has its own ID, which is set to lastly used `memory_identifier`. This separates allocations in code to blocks and you can run GC with the `memory_identifier` to deallocate those blocks.
\ No newline at end of file
diff --git a/docs/functions/index.md b/docs/functions/index.md
index 0c8a113..498b07e 100644
--- a/docs/functions/index.md
+++ b/docs/functions/index.md
@@ -58,6 +58,7 @@ You can find documentation for every *public* function of WHY2 below.
 | [`why2_get_flags_changed`](./core/flags/getters/why2_get_flags_changed) | *This functions doesn't have any description.* |
 | [`why2_get_padding_changed`](./core/flags/getters/why2_get_padding_changed) | *This functions doesn't have any description.* |
 | [`why2_get_memory_identifier`](./core/flags/getters/why2_get_memory_identifier) | Returns string used in linked list (in memory.c) for identifying nodes when running garbage collector |
+| [`why2_get_default_memory_identifier`](./core/flags/getters/why2_get_default_memory_identifier) | *This functions doesn't have any description.* |
 
 ## Logger