[Home](./index.md) > [bitburner](./bitburner.md) > [NS](./bitburner.ns.md) > [clear](./bitburner.ns.clear.md)
## NS.clear() method
This function is used to clear data in a Netscript Ports or a text file.
If the port/fn argument is a number between 1 and 20, then it specifies a port and will clear it (deleting all data from the underlying queue).
If the port/fn argument is a string, then it specifies the name of a text file (.txt) and will delete all data from that text file.
Signature:
```typescript
clear(handle: Handle): void;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| handle | [Handle](./bitburner.handle.md) | Port or text file to clear. |
Returns:
void
## Remarks
1 GB