diff --git a/doc/luasnip.txt b/doc/luasnip.txt
index eda4437c..58a82778 100644
--- a/doc/luasnip.txt
+++ b/doc/luasnip.txt
@@ -1,4 +1,4 @@
-*luasnip.txt*           For NVIM v0.8.0          Last change: 2024 November 18
+*luasnip.txt*           For NVIM v0.8.0          Last change: 2024 November 27
 
 ==============================================================================
 Table of Contents                                  *luasnip-table-of-contents*
@@ -1459,6 +1459,23 @@ Simple example:
       }, {
         repeat_duplicates = true
       }))
+      s("example5", fmt([[
+        line1: no indent
+    
+          line3: two space -> 1 indent ('\t')
+            line4: 4 space -> 2 indent ('\t\t')
+      ]], {}, {
+        indent_string = "  "
+      }))
+      -- NOTE: [[\t]] means '\\t'
+      s("example6", fmt([[
+        line1: no indent
+    
+        \tline3: '\\t' -> 1 indent ('\t')
+        \t\tline4: '\\t\\t' -> 2 indent ('\t\t')
+      ]], {}, {
+        indent_string = [[\t]]
+      }))
     })
 <
 
@@ -1487,6 +1504,9 @@ any way, correspond to the jump-index of the nodes!
         when passing multiline strings via `[[]]` (default true).
     - `dedent`: remove indent common to all lines in `format`. Again, makes
         passing multiline-strings a bit nicer (default true).
+    - `indent_string`: convert `indent_string` at beginning of each line to unit
+        indent (’). This is applied after `dedent`. Useful when using
+        multiline string in `fmt`. (default empty string, disabled)
     - `repeat_duplicates`: repeat nodes when a key is reused instead of copying
         the node if it has a jump-index, refer to |luasnip-basics-jump-index| to
         know which nodes have a jump-index (default false).