diff --git a/docs/INPUT_OPTIONS.md b/docs/INPUT_OPTIONS.md
index 1535094..2b4cec0 100644
--- a/docs/INPUT_OPTIONS.md
+++ b/docs/INPUT_OPTIONS.md
@@ -1,58 +1,220 @@
 
 # Input options
 
+This page describes `tird` input options.
+
+## Table of contents
+
+- [[01] Select an action](#01-select-an-option)
+- [[02] Use custom settings?](#02-use-custom-settings)
+- [[03] Argon2 time cost](#03-argon2-time-cost)
+- [[04] Max padding size](#04-max-padding-size)
+- [[05] Set a fake MAC tag?](#05-set-a-fake-mac-tag)
+- [[06] Input file path](#06-input-file-path)
+- [[07] Output file path](#07-output-file-path)
+- [[08] Start position](#08-start-position)
+- [[09] End position](#09-end-position)
+- [[10] Comments](#10-comments)
+- [[11] Keyfile path](#11-keyfile-path)
+- [[12] Passphrase](#12-passphrase)
+- [[13] Proceed?](#13-proceed)
+- [[14] Output file size](#14-output-file-size)
+
 ---
 
-### [01] Select an action
+## [01] Select an option
+
+Select the action to perform from the MENU list.
+
+#### List of available actions
+
+<table>
+
+<tr> <td><b>Action number</b></td> <td><b>Short description</b></td> <td><b>Description</b></td> </tr>
+
+<tr> <td>0</td> <td>Exit</td> <td>Exiting <code>tird</code>.</td></tr>
+
+<tr> <td>1</td> <td>Info & warnings</td> <td>Displaying info and warnings.</td> </tr>
+
+<tr> <td>2</td> <td>Encrypt</td> <td>Encrypt file contents and comments; write the cryptoblob to a new file.</td> </tr>
+
+<tr> <td>3</td> <td>Decrypt</td> <td>Decrypt a file; display the decrypted comments and write the decrypted contents to a new file.</td> </tr>
+
+<tr> <td>4</td> <td>Embed</td> <td>Embed file contents (no encryption): write input file contents over output file contents.</td> </tr>
+
+<tr> <td>5</td> <td>Extract</td> <td>Extract file contents (no decryption) to a new file.</td> </tr>
+
+<tr> <td>6</td> <td>Encrypt & embed</td> <td>Encrypt file contents and comments; write the cryptoblob over a container.</td> </tr>
+
+<tr> <td>7</td> <td>Extract & decrypt</td> <td>Extract and decrypt cryptoblob; display the decrypted comments and write the decrypted contents to a new file.</td> </tr>
+
+<tr> <td>8</td> <td>Create w/ random</td> <td>Create a file with random data.</td> </tr>
+
+<tr> <td>9</td> <td>Overwrite w/ random</td> <td>Overwrite file contents with random data.</td> </tr>
+
+</table>
+
+#### Example
+
+```
+$ tird
+
+                       MENU
+    ———————————————————————————————————————————
+    0. Exit              1. Info & warnings
+    2. Encrypt           3. Decrypt
+    4. Embed             5. Extract
+    6. Encrypt & embed   7. Extract & decrypt
+    8. Create w/ random  9. Overwrite w/ random
+    ———————————————————————————————————————————
+[01] Select an option [0-9]: 8
+I: action #8:
+    create a file with random data
+```
 
 ---
 
-### [02] Use custom settings?
+## [02] Use custom settings?
 
 ---
 
-### [03] Argon2 time cost
+## [03] Argon2 time cost
 
 ---
 
-### [04] Max padding size
+## [04] Max padding size
 
 ---
 
-### [05] Set a fake MAC tag?
+## [05] Set a fake MAC tag?
 
 ---
 
-### [06] Input file path
+## [06] Input file path
 
 ---
 
-### [07] Output file path
+## [07] Output file path
+
+Examples
+
+```
+[07] File to overwrite (container): container.bin
+I: path: "container.bin"
+I: size: 1000000 B, 976.6 KiB
+```
+
 
 ---
 
-### [08] Start position
+## [08] Start position
+
+Examples
+
+```
+[08] Start position, valid values are [0; 999936]: 1111
+I: start position: 1111
+I: end position: 1175
+```
+
 
 ---
 
-### [09] End position
+## [09] End position
 
 ---
 
-### [10] Comments
+## [10] Comments
+
+
+Examples
+
+```
+[10] Comments (optional, up to 512 B):
+I: comments will be shown as: [None]
+```
 
 ---
 
-### [11] Keyfile path
+## [11] Keyfile path
+
+```
+[11] Keyfile path (optional):
+[12] Passphrase (optional):
+```
+
 
 ---
 
-### [12] Passphrase
+## [12] Passphrase
+
+Examples
+
+
+```
+[12] Passphrase (optional):
+[12] Confirm passphrase:
+I: passphrase accepted
+```
+
+```
+[12] Passphrase (optional):
+[12] Confirm passphrase:
+E: passphrase confirmation failed
+```
+
+
+```
+[12] Passphrase (optional):
+I: entering keying material is completed
+```
+
 
 ---
 
-### [13] Proceed?
+## [13] Proceed?
+
+
+Examples
+
+```
+W: output file contents will be partially overwritten!
+[13] Proceed? (Y/N): y
+I: writing random data...
+```
+
+```
+W: output file contents will be partially overwritten!
+[13] Proceed? (Y/N): n
+I: stopped by user reques
+```
+
+```
+W: output file contents will be partially overwritten!
+[13] Proceed? (Y/N): y
+I: reading, writing...
+```
+
+
+```
+I: next it's offered to remove the output file path
+[13] Proceed? (Y/N, default=Y):
+I: path "fooo" has been removed
+```
+
 
 ---
 
-### [14] Output file size
+## [14] Output file size
+
+
+```
+[14] Output file size in bytes: 1000000
+I: size: 1000000 B, 976.6 KiB
+```
+
+
+
+
+
+