This is a machine-readable binary file. When you click "Compile" in MetaEditor, the platform transforms your MQ4 text into compressed bytecode. This is the file MT4 executes to run trades.
Many free indicators/EA developers will share the MQ4 if you ask politely. For paid products, offer to purchase the source code (often an extra fee). How To Convert Ex4 To Mq4 Free
Many developers are reasonable. Explain your situation: This is a machine-readable binary file
These are often outdated and may contain malware. They rarely work on files compiled in the last several years. Open-Source Converters: you'll need to:
To use a hex editor, you'll need to: