Features

Feature	What the user gets in Thonny 5
.pseudo / .algo	Two equivalent source extensions
Run	F5, Ctrl+R, green triangle and Pseudocode menu
Syntax highlighting	Native Thonny coloring that follows the active theme
Diagnostics	Live errors/warnings with clickable source locations
Completion	Automatic suggestions plus Ctrl+Space
Hover and signatures	Contextual syntax, builtin and call help
Navigation	Definitions, references and rename
Formatting	Canonical Pseudocode formatting from the menu/shortcut
Language selection	14 supported source languages, independent from Thonny UI language
Conversion	Pseudocode → Python and Python → Pseudocode
Documentation	Searchable help in the detected source language
Algorigramme	Mermaid or Graphviz with configurable text size and exports
Exécution pas à pas	Source, state, output/calls and synchronized graph
Informations	Thonny/Python/core/LSP/lexer versions and project state

The same semantic graph is used by Mermaid, Graphviz and Tutor. Loop bodies and nested loop bodies preserve the stable vertical layout defined by the shared core.