This is the most critical upgrade. A "better" decompiler uses heuristics to identify dead code (junk instructions that never execute) and simplify the execution graph. It untangles the complex web of jumps into clean if/then/else blocks and for loops that humans can actually read.

Decompiling files (compiled AutoLISP application modules for AutoCAD) is notoriously difficult because these files are not simple scripts; they are containers that often bundle multiple (compiled LISP) and (dialog) files into a single encrypted executable.

Modern decompilers are no longer just simple "search and replace" tools. They are becoming more "intelligent" in how they reconstruct logic:

files, you need a decompiler to translate the compiled p-code back into readable source code. FAS-Disassembler/Decompiler : One of the more effective tools is the FAS-Disassembler

A superior tool extracts the DCL code as a separate, editable .dcl file or inlines it as a string. Without this, a decompiled application is half-blind.