From ce67300cd31193cb0f0231a8d09de3d309a5a8e2 Mon Sep 17 00:00:00 2001
From: Beforerr <zzj956959688@gmail.com>
Date: Mon, 18 Nov 2024 20:24:54 -0800
Subject: [PATCH] doc: update type hiearchy

---
 docs/src/manual/particle-types.md | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/docs/src/manual/particle-types.md b/docs/src/manual/particle-types.md
index 09da84d..80ac3fb 100644
--- a/docs/src/manual/particle-types.md
+++ b/docs/src/manual/particle-types.md
@@ -5,16 +5,27 @@ ChargedParticles.jl provides a flexible type system for representing various typ
 ## Type Hierarchy
 
 ```@raw html
+
+The package uses a exhaustive type hierarchy:
+
 <pre>
 AbstractParticle
-└── Particle
+├── AbstractChargeParticle
+│   ├── Particle
+├── AbstractFermion
+│   ├── AbstractLepton
+│   │   ├── Electron
+│   │   └── Muon
+│   └── AbstractQuark
+│   └── Neutron
+│   └── ...
 └── CustomParticle
 </pre>
 ```
 
-The package uses a simple three-level type hierarchy:
 - `AbstractParticle`: Base abstract type for all particles
-- `Particle`: Physically meaningful particle type (where symbol encodes the actual type of the particle)
+- `AbstractChargeParticle`: Particles that could carry an electric charge.
+- `Particle`: Physically meaningful particle type (for ions where symbol encodes the actual type of the particle)
 - `CustomParticle`: Custom particle type for user-defined particles (where symbol is just a label)
 
 ## Particle Properties