> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.clonable.net/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How does the Case Senstive setting work?

In the digital world, Case Sensitivity is the difference between a system being "strict" or "flexible" with capital letters.
* **Case Sensitive (Strict):** Treats Apple and apple as two completely different words.
* **Case Insensitive (Flexible):** Treats Apple, APPLE, and apple as the exact same word.

### **1. Translation Settings**
In the **Translation Replacements** and **Exclusions** sections, you will see an **Aa** icon you can select on (orange) or off (grey).
* **If OFF (Default/Flexible):** Clonable is smart. If you replace "train" with "trein," it will automatically handle "Train" to "Trein" and "TRAIN" to "TREIN" for you. You don't need to add the word three different times.
* **If ON (Strict):** Clonable will *only* replace the word if the capitalization matches exactly what you typed. This is useful for brand names or technical terms that must remain lowercase or uppercase.
![](https://storage.crisp.chat/users/helpdesk/website/-/4/1/5/7/415740f4b2c87400/case-sensitive-translation-rep_1eeyvvz.png)
### **2. Advanced Settings: Substitution Rules**
Under **Advanced Settings**, the logic is reversed for more control. By default, Substitution Rules are **Case Sensitive**.
* **The Default State:** The rule will only trigger if the text on your site perfectly matches the casing in your rule.
* **The "Case Insensitive" Checkbox:** If you check this box, the rule becomes "flexible." It will apply to the text regardless of whether it is written in UPPERCASE, lowercase, or Sentence case.
![](https://storage.crisp.chat/users/helpdesk/website/-/4/1/5/7/415740f4b2c87400/case-sensitive-substitution-ru_9x4s6j.png)

### **Quick Summary Table**
| **Setting** | **If Case Sensitive is ON** | **If Case Sensitive is OFF** |
| **Search Term** | iPhone | iPhone |
| **Matches...** | Only iPhone | iphone, IPHONE, Iphone |
| **Best For:** | Specific brands or codes. | General words and sentences. |

### **Why should you care?**
Using Case Sensitive  saves you time. Instead of creating five different rules for "Contact," "contact," and "CONTACT," you just create one. Only use the Case Sensitive option when you need surgical precision for a specific term.