When contributing to another's project, it is common for the contribution to be
of many commits and involve a discussion with the project's maintainer.  This is supported
via Radicle *patches*.

Here we give a brief overview for using patches in our hypothetical car
scenario.  It turns out instructions containing the power requirements were
missing from the project.

```
$ git checkout -b flux-capacitor-power
$ touch REQUIREMENTS
```

Here the instructions are added to the project's `REQUIREMENTS` for 1.21
gigawatts and committed with git.

```
$ git add REQUIREMENTS
$ git commit -v -m "Define power requirements"
[flux-capacitor-power 3e674d1] Define power requirements
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 REQUIREMENTS
```

Once the code is ready, we open a patch with our changes.

```
$ rad patch open --message "Define power requirements" --message "See details."
master <- z6Mkt67…v4N1tRk/flux-capacitor-power (3e674d1)
1 commit(s) ahead, 0 commit(s) behind

3e674d1 Define power requirements

✓ Patch a07ef7743a32a2e902672ea3526d1db6ee08108a created 🌱

To publish your patch to the network, run:
    rad push
```

It will now be listed as one of the project's open patches.

```
$ rad patch
╭─────────────────────────────────────────────────────────────────────────────────────────╮
│ Define power requirements a07ef77 R0 3e674d1 (flux-capacitor-power) ahead 1, behind 0   │
├─────────────────────────────────────────────────────────────────────────────────────────┤
│ ● opened by did:key:z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk (you) 3 months ago │
╰─────────────────────────────────────────────────────────────────────────────────────────╯
$ rad patch show a07ef7743a32a2e902672ea3526d1db6ee08108a
╭─────────────────────────────────────────────────────────────────────────────────────────╮
│ Title   Define power requirements                                                       │
│ Patch   a07ef7743a32a2e902672ea3526d1db6ee08108a                                        │
│ Author  did:key:z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk                        │
│ Status  open                                                                            │
│                                                                                         │
│ See details.                                                                            │
├─────────────────────────────────────────────────────────────────────────────────────────┤
│ ● opened by did:key:z6Mkt67GdsW7715MEfRuP4pSZxJRJh6kj6Y48WRqVv4N1tRk (you) 3 months ago │
╰─────────────────────────────────────────────────────────────────────────────────────────╯

commit 3e674d1a1df90807e934f9ae5da2591dd6848a33
Author: radicle <radicle@localhost>
Date:   Thu Dec 15 17:28:04 2022 +0000

    Define power requirements

diff --git a/REQUIREMENTS b/REQUIREMENTS
new file mode 100644
index 0000000..e69de29

```

Wait, let's add a README too! Just for fun.

```
$ touch README.md
$ git add README.md
$ git commit --message "Add README, just for the fun"
[flux-capacitor-power 27857ec] Add README, just for the fun
 1 file changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 README.md
$ rad patch update --message "Add README, just for the fun" a07ef7743a32a2e902672ea3526d1db6ee08108a
Updating 3e674d1 -> 27857ec
1 commit(s) ahead, 0 commit(s) behind
✓ Patch updated to revision 11483929d8714a92992229f65433e06288f3b760
```

And let's leave a quick comment for our team:

```
$ rad comment a07ef7743a32a2e902672ea3526d1db6ee08108a --message 'I cannot wait to get back to the 90s!'
18987961eb5e5a8c7fb1fb58f514030d3ea69802
```