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.mdl

File Type 1 Generic IconMathWorks Simulink Model
File Format Standard (developed by MathWorks)
Usage Open manually
Popularity ★ ★ ★ ★ ☆  Common
Description

The MDL format is a standard text-based format used by Simulink for saving simulation models. Each MDL file includes a list of elements, which each contain a list of values. The model data can be parsed by Simulink and displayed visually within the program.

Important: Until 2012, the MDL format was the standard model format used by Simulink. It has since been replaced by the newer .SLX format.

Info About MathWorks Simulink

MathWorks Simulink is a scientific application designed for performing simulation and creating model-based designs. It supports system-level design, automatic code generation, and continuous testing. The program includes a graphical editor, customizable block libraries, and "solvers," which can be used to model dynamic systems. Simulation results can be exported to MATLAB, MathWorks' technical computing application.

Open With
Windows

IconMathWorks Simulink

macOS

IconMathWorks Simulink

Unix

IconMathWorks Simulink

Published January 28, 2013
File Type 2 Generic IconHalf-Life Model File
File Format Proprietary (Valve)
Usage Open manually; may be referenced by an application
Popularity ★ ★ ★ ★ ☆  Common
Description

Three-dimensional model used for characters and creatures in the Half-Life video game; created using polygons and texture mapping for detail; can be seen from different views (wireframe, flatshaded, smoothshaded, and textured) using the Half-Life Model Viewer.

Important: QC files are actually used by Valve's Source game engine, so they are not restricted to Half-Life models.

Open With
Windows

IconchUmbaLum sOft Half-Life Model Viewer

IconchUmbaLum sOft MilkShape 3D

IconMDLDecompiler

macOS

IconValve Half-Life 2

Unix

IconchUmbaLum sOft Half-Life Model Viewer

Published 2007
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Information from the PC File Extensions Reference
https://pc.net/extensions/mdl
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