# Peek

### Folder Sync

Folder Sync can terrify you by showing a blank screen:

![](https://1446155253-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LXUX-uoaZJ8T4qyEc-x%2F-LaReoZQEPAsW9rdTQYc%2F-LaRexqsv4facMzBP9BP%2Fimage.png?alt=media\&token=2b3b3d7a-39c1-44fa-9610-a6576e83e671)

BC thinks you don't want to see the files that don't need syncing (e.g. files that are already up to date on both sides), so it hides them.  To unhide those files, press ![](https://firebasestorage.googleapis.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LXUX-uoaZJ8T4qyEc-x%2Fuploads%2FmtEYl8XiiToQyCquTJ9Z%2Ffile.png?alt=media) Peek 

![](https://1446155253-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LXUX-uoaZJ8T4qyEc-x%2F-LaReoZQEPAsW9rdTQYc%2F-LaRfC-34zj_f9_U90Ld%2Fimage.png?alt=media\&token=23c32d42-c6f9-4551-91e9-d7e21654fe41)

### Turn off a filter

Other than Folder Sync, you don't have to worry about Peek in the beginning until you start using filters.  

Peek allows you to turn off a filter. Down below, I have those sort of (okay, extremely) annoying[ Apple meta files](https://apple.stackexchange.com/questions/14980/why-are-dot-underscore-files-created-and-how-can-i-avoid-them#14981) that get split off when you copy from Mac to a non-Apple environment.  

![Dot files, shown in a Folder Compare session](https://1446155253-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LXUX-uoaZJ8T4qyEc-x%2F-LaR_MnOPWsZYxvArpEG%2F-LaR_Q_SKOeaFprxJ8sB%2Fimage.png?alt=media\&token=b6254713-d410-4ecd-8e74-7ca19a4d3891)

If you don't want to see files that begin with dot (1) you can set a filter with Session->SessionSettings->NameFilters.  Set the filter to Exclude files matching the pattern of "dot anything", in other words .\*.  Star means wildcard here, similar to DOS/JS language.  But now you can use  use ![](https://firebasestorage.googleapis.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LXUX-uoaZJ8T4qyEc-x%2Fuploads%2FGGFprvb87v0GTmO3mlOL%2Ffile.png?alt=media) Peek to toggle the filter on and off.


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# Agent Instructions: 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:

```
GET https://beyondcompare.gitbook.io/project/other/peek.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.