Download
Technology
Download Modes
Supported Protocols

Filters
Limiting the Scope
File Attributes
FileExtensions
Advanced Filterrules
Misc Filters

Scheduler
Schedule Downloads
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Misc
Supported Fomats
Integrated HTTP Server
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Multi-Language

When using filtering through fileextensions you can specify a list of extensions that shouldn´t be downloaded. For example ".exe" or "zip".
You can only add one extensions at a time.