Update and reorganize documentation

- Convert "Common Tasks" to "How-to Guides"
  (QubesOS/qubes-issues#6694)
- Make title capitalization consistent across docs
- Fix leftover h1 headings
- Reorganize various pages and topics
- Update permalinks to better match titles
- Create redirects for changed permalinks
- Miscellaneous cleanup

QubesOS/qubes-issues#6701

user/how-to-guides/how-to-copy-from-dom0.md

@@ -0,0 +1,86 @@
+---
+lang: en
+layout: doc
+permalink: /doc/how-to-copy-from-dom0/
+redirect_from:
+- /doc/copy-from-dom0/
+- /doc/copy-to-dom0/
+- /en/doc/copy-to-dom0/
+- /doc/CopyToDomZero/
+- /wiki/CopyToDomZero/
+ref: 198
+title: How to Copy from Dom0
+---
+
+
+This page covers copying files and clipboard text between [dom0](/doc/glossary/#dom0) and [domUs](/doc/glossary/#domu).
+Since dom0 is special, the processes are different from [copying and pasting text between qubes](/doc/copy-paste/) and [copying and moving files between qubes](/doc/copying-files/).
+
+## Copying **from** dom0
+
+### Copying files from dom0
+
+To copy a file from dom0 to a VM, simply use `qvm-copy-to-vm`:
+
+```
+qvm-copy-to-vm <target_vm> <file>
+```
+
+The file will arrive in the target VM in the `/home/user/QubesIncoming/dom0/` directory.
+
+### Copying and pasting clipboard text from dom0
+
+Use the **Qubes Clipboard** widget:
+
+ 1. Copy text to the clipboard normally in dom0 (e.g., by pressing Ctrl+C).
+
+ 2. Click the **Qubes Clipboard** icon in the Notification Area.
+
+ 3. Click "Copy dom0 clipboard".
+    This displays a notification that text has been copied to the inter-qube clipboard.
+
+ 4. Press Ctrl+Shift+V in the target qube.
+    This pastes the inter-qube clipboard contents into the target qube's normal clipboard.
+
+ 5. Paste normally within that qube (e.g., by pressing Shift+V).
+
+Alternatively, you can put your text in a file, then [copy it as a file](#copying-files-from-dom0).
+Or, you can write the data you wish to copy into `/var/run/qubes/qubes-clipboard.bin`, then `echo -n dom0 > /var/run/qubes/qubes-clipboard.bin.source`.
+Then use Ctrl+Shift+V to paste the data to the target qube.
+
+### Copying logs from dom0
+
+In order to easily copy/paste the contents of logs from dom0 to the inter-VM clipboard, you can simply:
+
+ 1. Right-click on the desired qube in the Qube Manager.
+
+ 2. Click "Logs."
+
+ 3. Click on the desired log.
+
+ 4. Click "Copy to Qubes clipboard."
+
+You may now paste the log contents in qube as you normally would (e.g., Ctrl+Shift+V, then Ctrl+V).
+
+## Copying **to** dom0
+
+Copying anything into dom0 is not advised, since doing so can compromise the security of your Qubes system.
+For this reason, there is no simple means of copying anything into dom0, unlike [copying from dom0](#copying-from-dom0).
+
+There should normally be few reasons for the user to want to copy anything from domUs to dom0, as dom0 only acts as a "thin trusted terminal", and no user applications run there.
+Sometimes, new users feel the urge to copy a desktop wallpaper image into dom0, but that is not necessary.
+A safer approach is simply to display the image in [full-screen mode](/doc/full-screen-mode/) in an AppVM, then take a screenshot from dom0, which results in exactly the image needed for a wallpaper, created securely and natively in dom0.
+
+If you are determined to copy some files to dom0 anyway, you can use the following method.
+(If you want to copy text, first save it into a text file.)
+Run this command in a dom0 terminal:
+
+```
+qvm-run --pass-io <src-vm> 'cat /path/to/file_in_src_domain' > /path/to/file_name_in_dom0
+```
+
+Note that you can use the same method to copy files from dom0 to domUs (if, for some reason, you don't want to use `qvm-copy-to-vm`):
+
+```
+cat /path/to/file_in_dom0 | qvm-run --pass-io <dest-vm> 'cat > /path/to/file_name_in_appvm'
+```