> For the complete documentation index, see [llms.txt](https://eako-capital.gitbook.io/eako-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eako-capital.gitbook.io/eako-user-guide/barrier-options/time-aspect.md).

# Time Aspect

### Continuous (otherwise known as "American" style barrier)

Refers to the time aspect of the barrier condition.  A continuous barrier means that the option will be knocked in (knocked out) if the spot rate trades at or through the barrier at any time prior to expiry.

### Window

Also refers to the time aspect of the barrier condition.  A window barrier means that the option can only be knocked in (knocked out) during a predetermined specified period.

The main types of window barrier are:

Forward Barrier - Forward Start means that the barrier is inactive for the first part of the option's term and can only be triggered after an agreed date till expiry.

Partial Barrier - Means that the barrier is active only for a period from the transaction date to an agreed date and can only be triggered during this period.

### "European" style barrier

Means that the barrier condition is only active at expiry of the option.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://eako-capital.gitbook.io/eako-user-guide/barrier-options/time-aspect.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.