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.stl

File Type 1 Generic IconCertificate Trust List
File Format Standard (developed by Microsoft)
Usage Referenced by an application; not meant to be opened manually
Rank ★ ☆ ☆  Uncommon
Description

List of predefined items that have been signed by a trusted entity; may consist of a list of filenames or a list of certificates; each item in the list has been approved by the signing entity.

Certificate trust lists (CTLs) are used by Microsoft IIS to store trusted websites and other addresses that require a secure connection.

Open With
Windows

IconMicrosoft Internet Information Services (IIS)

Updated 2007
File Type 2 Stereolithography File IconStereolithography File
File Format Standard
Usage Open manually
Rank ★ ★ ★  Common
Description

The STL format is a standard file format used by Stereolithography hardware and software. Stereolithography, also called "optical fabrication" or "solid imaging," is a 3D printing technology used for producing three-dimensional models, prototypes, and production parts.

STL files contain a 3D design that serves as a master model for creating numerous prototypes. The STL format is an interchange file format supported by several different CAD programs and 3D printers.

Open With
Windows

IconIMSI TurboCAD for Windows

IconGOM Inspect

IconideaMK STL Viewer

Macintosh

IconIMSI TurboCAD for Mac

IconCheetah3D

IconMeshLab

Unix

IconParametric Technology Pro/ENGINEER

IconDassault Systemes CATIA

IconMeshLab

Updated September 20, 2013
File Type 3 Fireworks Style Library IconFireworks Style Library
File Format Proprietary (Adobe Systems)
Usage Open manually; may be referenced by an application
Rank ★ ☆ ☆  Uncommon
Description

Library of styles referenced by Macromedia (now Adobe) Fireworks; may be used to apply Stroke, Fill, Effect, and Text attributes to an object within an open Fireworks project; can be helpful for creating a uniform look across multiple objects.

Some styles are included with Fireworks, though additional styles may be added to the program. To add extra styles, click the small icon in the top right corner of the Styles panel in Fireworks and select "Import Styles." Then browse to an STL file and click OK to add the style library to your current collection.

Open With
Windows

IconAdobe Fireworks

Macintosh

IconAdobe Fireworks

Updated 2007
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