Absolutely — here's a concise, one-page Vim cheat sheet in Markdown format, focused on everyday editing tasks like changing case, searching, and replacing text:

---

```markdown
# Vim Cheat Sheet (One-Page)

## Modes
| Mode        | Key to Enter     | Description              |
|-------------|------------------|--------------------------|
| Normal      | `Esc`            | Navigation & commands    |
| Insert      | `i`, `a`, etc.   | Text input               |
| Visual      | `v`, `V`, `Ctrl+v` | Select text              |
| Command     | `:`              | Execute commands         |

---

## Basic Editing

| Action                   | Command               |
|--------------------------|-----------------------|
| Insert before cursor     | `i`                   |
| Append after cursor      | `a`                   |
| Insert new line below    | `o`                   |
| Insert new line above    | `O`                   |
| Delete character         | `x`                   |
| Delete word              | `dw`                  |
| Delete line              | `dd`                  |
| Undo                     | `u`                   |
| Redo                     | `Ctrl+r`              |

---

## Replacing & Changing

| Task                     | Command                                |
|--------------------------|----------------------------------------|
| Replace character        | `r<char>`                              |
| Change word              | `cw`                                   |
| Change to end of line    | `C` or `c$`                            |
| Replace in file          | `:%s/old/new/g`                        |
| Confirm replace          | `:%s/old/new/gc`                       |

---

## Case Changing

| Task                     | Command             |
|--------------------------|---------------------|
| Uppercase word           | `gUw`               |
| Uppercase selection      | `gU` (in visual mode) |
| Lowercase word           | `guw`               |
| Toggle case (char)       | `~`                 |

---

## Navigation

| Move To                  | Command             |
|--------------------------|---------------------|
| Beginning of line        | `0`                 |
| First non-whitespace     | `^`                 |
| End of line              | `$`                 |
| Word forward             | `w`                 |
| Word backward            | `b`                 |
| Paragraph forward/back   | `{` / `}`           |
| File top/bottom          | `gg` / `G`          |

---

## Search

| Task                     | Command             |
|--------------------------|---------------------|
| Search forward           | `/pattern`          |
| Search backward          | `?pattern`          |
| Next/prev match          | `n` / `N`           |
| Clear highlight          | `:noh`              |

---

## Buffers & Files

| Action                   | Command             |
|--------------------------|---------------------|
| Save                     | `:w`                |
| Quit                     | `:q`                |
| Save & quit              | `:wq` or `ZZ`       |
| Quit without saving      | `:q!`               |
| Open file                | `:e filename`       |
| Switch buffer            | `:bnext` / `:bprev` |

---

**Pro tip**: Use `.` to repeat your last change.

```