Comment Removing From EX5/EX4
Source comments, compiled binary strings, and analysis-generated annotations represent three distinct types of data. Understanding how MetaTrader compilers handle text clarifies what can be cleaned, what is permanently lost during compilation, and why binary strings must be handled with architectural care.
Technical assessments only — for EX5 and EX4 files you own or are authorized to inspect.
Our structural analysis distinguishes between non-compiled documentation, executable string literals, and decompiler annotations:
- Source Comment Stripping Analysis
- Embedded String Table Extraction
- Runtime Message & Alert Mapping
- Reconstructed Source Annotation Cleanup
- Bytecode Offset & Integrity Verification
What Does “Comment Removing” Mean in EX5 and EX4?
The phrase “comment removing from EX5/EX4” is frequently used in search queries, but it covers several technically distinct concepts depending on whether you are working with an editable source file (.mq4 / .mq5), a compiled binary (.ex4 / .ex5), or reconstructed code output from a decompiler.
What comment removing actually means: In original source code, it means stripping human developer notes (// or /* */). In a compiled EX4/EX5 binary, source comments do not exist; removing text refers to analyzing embedded string tables. In decompiled code, it refers to cleaning synthetic annotations added by analysis software.
Source Comments Are a Source-Level Concept
In human-written MQL4 and MQL5 code, comments are text notes written to explain logic, document algorithms, or temporarily disable code blocks. When the compiler processes the source file, it treats comments as non-executable whitespace and removes them entirely before generating bytecode.
Binary Text Can Serve a Different Purpose
When text is discovered inside an EX4 or EX5 binary, it is almost never an original source comment. Instead, it is an active string literal used by the program for order execution comments, chart labels, log messages, WebRequest URLs, or licensing checks.
Where Can Comment-Like Text Come From?
To evaluate or clean text associated with an EX4 or EX5 application, one must first identify its origin. Textual data originates from one of three distinct stages:
Comments in Original MQ4 or MQ5
Human-written documentation, inline reminders, and author notices created in MetaEditor. These exist purely in source code and do not enter the compiled binary.
Strings and Text Embedded in EX4 or EX5
Literal constants compiled into the binary string pool. This includes trading messages, chart comments via Comment(), GUI labels, and error notifications.
Labels and Annotations Created During Analysis
Synthetic remarks inserted by reverse engineering tools or decompiler engines to describe reconstructed bytecode blocks, parameter offsets, or control-flow branches.
What Happens to Comments During Compilation?
Understanding why comments cannot simply be “extracted” or “removed” from an existing EX4 or EX5 file requires examining the compilation pipeline of MetaEditor.
During the lexical analysis phase, the compiler reads the raw characters of an MQ4 or MQ5 file, builds an abstract syntax tree (AST), and generates machine bytecode. Because comments do not affect program execution, the lexer discards them immediately. They occupy zero bytes in the resulting EX4 or EX5 binary.
Can You Remove Comments From an EX5 or EX4 File?
To answer directly: You cannot remove source comments from an EX4 or EX5 file because source comments do not exist inside compiled binaries.
Can you remove comments from EX5/EX4? No, because compilation strips them prior to generating the binary. If you wish to remove visible text from a compiled program, you are attempting to modify embedded string literals or reconstructed source code, which requires distinct architectural workflows rather than a simple deletion.
Depending on what you are trying to achieve, three distinct scenarios apply:
Cleaning Original Source Code
If you possess the original .mq4 or .mq5 source file, you can easily strip all comments in MetaEditor and recompile. This yields a clean binary without any residual source notes.
Cleaning Reconstructed Code
If you have decompiled an EX4/EX5 binary, the resulting source will contain automated analyzer annotations. Cleaning these synthetic comments is a standard post-reconstruction editing step.
Modifying Binary Strings
Attempting to delete text directly out of an EX4 or EX5 binary without decompilation is dangerous. Byte offsets, string lengths, and pointer tables can easily be corrupted, leading to terminal crashes.
Comments, Strings, and Metadata: What Is the Difference?
Clear terminology is essential when discussing text artifacts in MetaTrader environments. The table below summarizes the technical characteristics of each text category:
| Category | Typical Meaning & Role | Present in Source? | Stored in EX4/EX5? | May Affect Runtime? |
|---|---|---|---|---|
| Source Comment | Human-written developer notes, algorithm explanations, documentation. | Yes (MQ4 / MQ5) | No (stripped by compiler) | No (non-executable) |
| Embedded String | Text constants used by logic: trade comments, alerts, GUI labels, URLs. | Yes (as literals) | Yes (in string pool) | Yes (actively processed) |
| Artifact Metadata | Compiler build tags, header timestamps, program properties (#property). | Yes (directives) | Partially (headers/flags) | Depends (e.g. indicator buffers) |
| Generated Annotation | Synthetic comments inserted by decompiler or reverse engineering tools. | No (post-analysis) | No (analysis output) | No (informational only) |
When Only the Compiled EX4 or EX5 Exists
When an organization inherits a legacy Expert Advisor, or when source files have been lost, the compiled binary is the only available asset. In this binary-only scenario, several realities must be kept in mind:
- Original comments are permanently absent: The compiled binary contains bytecode and strings, but zero original developer comments.
- Strings must not be assumed to be comments: Text found inside the binary cannot simply be deleted; each string must be mapped to understand whether it controls order operations, licensing, or interface displays.
- Reconstruction produces new annotations: Decompilation engines produce functional representations of logic, but any comments in the resulting output are generated by analysis heuristics, not recovered from original developer files.
- Artifact-specific inspection is required: Every EX4 and EX5 binary differs based on compiler optimization, MT4/MT5 build versions, and data segment alignment.
What Can EX4/EX5 Comment and Text Analysis Identify?
Authorized static and behavioral inspection of an EX4 or EX5 binary allows developers to inspect all textual data embedded within the artifact. Such analysis can identify:
Visible Literal Strings
Extracts all plain text and Unicode strings stored in the compiled data segments, including log strings and error messages.
Trade & Order Comments
Identifies string constants passed into OrderSend(), OrderSendResult, or position management functions.
Network Endpoints
Uncovers remote REST API URLs, WebRequest endpoints, licensing servers, or external DLL function import names.
Chart Display Text
Maps strings utilized by chart drawing objects, graphical labels, custom indicator descriptions, and HUD displays.
Could Removing Text Change Program Behavior?
Yes, modifying or removing text from a compiled binary can fundamentally break program behavior.
Why removing strings alters behavior: In compiled EX4 and EX5 binaries, text strings are actively referenced by program logic. Removing a string, altering its length, or zeroing its bytes without updating pointer tables will corrupt memory structures, fail hash checks, or cause fatal execution crashes during live trading.
Key reasons why text inside a binary must be treated as functional data:
Bytecode Offset Invalidation
Compiled MQL bytecode references strings using memory offsets and string table indices. Altering bytes directly inside the file shifts downstream instruction addresses, causing the virtual machine to read corrupted opcodes.
Logic and Validation Dependencies
An EA may evaluate broker server names (AccountServer()) or match incoming order comments against a hardcoded string. If that string is altered or removed, trading decision branches fail.
Cleaning Comments From Reconstructed Source
When an authorized binary analysis reconstructs an EX4 or EX5 binary into an editable MQL4 or MQL5 source file, comment management becomes a source-level editing task.
Original Developer Comments vs Generated Annotations
Reconstructed source code will never contain the original author's comments. Instead, the decompiler inserts synthetic annotations (such as // Function reconstructed from sub_004012A0 or // Disassembled event handler). These notes describe structural characteristics deduced from bytecode.
When Source Cleanup Makes Sense
Once functional reconstruction is complete, developers typically clean out automated decompiler remarks, format the code according to internal team standards, rename synthetic variables with descriptive terms, and add meaningful documentation to prepare the codebase for ongoing maintenance.
Why Original EX5/EX4 Comments May Not Be Recoverable
Software owners often hope that an advanced decompilation engine can restore the original source code comments that accompanied their trading system. It is technically important to understand why this is impossible:
- One-Way Compiler Transformation: Compilation is a lossy process with respect to source formatting, whitespace, local variable names, and developer comments.
- Zero Residual Comment Artifacts: MetaEditor does not store debug symbols or source comments inside released EX4/EX5 files.
- Context Disconnection: While algorithm logic and mathematical formulas can be reconstructed from bytecode patterns, the subjective intent and human thoughts documented in comments leave no binary trace.
A Practical EX5/EX4 Comment Analysis Workflow
When evaluating comments, strings, or annotations in MetaTrader software, software owners should follow a structured, non-destructive workflow:
Determine Source vs Compiled Artifact State
Confirm whether you are working with an editable
.mq4/.mq5source file or a compiled.ex4/.ex5binary artifact.Confirm Ownership & Authorization
Verify that you own the intellectual property or hold explicit authorization to analyze the software artifact.
Classify Textual Elements Conceptually
Distinguish non-compiled comments, literal string constants, and metadata fields before planning any modifications.
Inspect Available Textual Evidence
Extract and inspect the binary's string pool using static analysis to catalog all active messages and external references.
Correlate Text with Program Execution Structures
Trace which strings are actively consumed by trade execution, alert dialogs, or licensing checks.
Perform Source Reconstruction Where Appropriate
If source code is lost, perform evidence-driven decompilation to generate a functionally equivalent source representation.
Clean Generated Annotations in Source
Remove synthetic analyzer notes, replace machine-generated variable labels, and document the clean codebase.
Validate Functional Behavior
Compile the cleaned source in MetaEditor and run rigorous strategy tester and demo validation checks.
What SnakeDecompiler Can Contribute to EX5/EX4 Text Analysis
SnakeDecompiler provides evidence-based technical analysis and source reconstruction for MetaTrader 4 and MetaTrader 5 software creators. Where supported by the artifact, our service provides:
String Discovery & Mapping
Complete structural extraction and behavioral mapping of all embedded string tables and references in the binary.
Source Reconstruction
Rebuilding clean, editable MQL4 or MQL5 source code from compiled bytecode when original source files have been lost.
Confidence & Risk Assessment
Transparent technical findings detailing data dependencies, external references, and known reconstruction limitations.
Practical Use Cases for EX5/EX4 Comment Cleanup
Comment and text analysis is routinely conducted across a variety of institutional and enterprise trading scenarios:
Cleaning Reconstructed Codebases
Transforming raw decompiler output into standardized, human-readable source code for long-term quantitative development.
Auditing Legacy Trading Systems
Inspecting orphan EX4/EX5 EAs to understand hardcoded messages, broker server restrictions, or obsolete trade comments.
Reviewing Customer-Facing Text
Ensuring that user alerts, chart comments, and error notifications in commercial software convey accurate branding and support data.
Preparation for MT4-to-MT5 Migration
Identifying all string-dependent order comments and chart objects before migrating legacy trading algorithms to MetaTrader 5.
Common Questions About EX5/EX4 Comments
Can comments be removed from an EX5 file?
Human-written source comments (such as // or /* */ annotations) are discarded during MetaEditor compilation and are not stored inside the EX5 file to be removed. Visible text inside an EX5 file represents embedded runtime strings or metadata. Removing or modifying these strings from a compiled binary is not a simple comment cleanup and can disrupt application logic or cause execution crashes.
Can comments be removed from an EX4 file?
Original MQL4 source code comments do not exist in a compiled EX4 binary because the compiler strips them before generating bytecode. If textual data is visible inside an EX4 file, it represents literal program strings, GUI labels, or log outputs rather than disposable source comments.
Are source comments stored in EX5 or EX4 binaries?
No. Standard MQL4 and MQL5 compilers completely strip developer comments during lexical analysis and code compilation. Neither EX4 nor EX5 binaries retain original developer comments, variable explanations, or non-functional documentation.
What is the difference between comments and strings in EX5/EX4?
Source comments are non-executable text notes written by developers in MQ4/MQ5 files to explain logic. Strings are explicit data types (such as alert messages, trade comments, or file paths) compiled directly into the binary bytecode that the trading application actively processes during execution.
Can a decompiler recover original developer comments from EX5 or EX4?
No decompiler can recover the original human-written comments from an EX4 or EX5 binary because that text was never stored in the compiled file. Any comments seen in a decompiled file are automated annotations, reconstructed variable tags, or heuristic disclaimers generated by the analysis tool.
Can removing or modifying text inside an EX5 or EX4 file change program behavior?
Yes. Unlike source comments, embedded strings often participate in trade operations, order comments, chart labels, API requests, and license checks. Modifying binary string tables can invalidate bytecode offsets, break string length headers, or alter critical decision branches.
What does cleaning comments from reconstructed source code involve?
When an EX4 or EX5 binary is analyzed and reconstructed into an editable MQ4/MQ5 source format, analysis tools frequently insert synthetic labels, type annotations, and offset remarks. Cleaning reconstructed source involves reviewing and removing these automated notes to produce clean, maintainable code.
What should you do when only the compiled EX4 or EX5 artifact exists?
When original source code is lost, you must treat the EX4/EX5 binary as an compiled artifact. Authorized analysis can inspect embedded string tables, trace how text interacts with trading functions, and support functional source reconstruction while acknowledging that original source comments cannot be restored.