From 6a1da92e892b60b3ce131493feaa06a9082bd492 Mon Sep 17 00:00:00 2001
From: Frederik Hennig <frederik.hennig@fau.de>
Date: Tue, 21 Jan 2025 17:22:45 +0100
Subject: [PATCH] short amendmend to the docs

---
 user_manual/guides/SparseSweeps.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/user_manual/guides/SparseSweeps.md b/user_manual/guides/SparseSweeps.md
index 03fea2e..a252253 100644
--- a/user_manual/guides/SparseSweeps.md
+++ b/user_manual/guides/SparseSweeps.md
@@ -8,6 +8,8 @@ The code shown in this guide is taken from the *SparseSpiral* example:
 
 `sfg-walberla` supports the generation of sparse sweeps, which operate only on a subset of cells
 defined by a user-provided *index list*.
+This can be useful if a numerical rule needs to be applied only in specific regions of the simulation
+domain, especially if those regions have an irregular geometry.
 
 To turn your sweep into a sparse sweep, simply set its `sparse` property to `True`.
 To illustrate, here's a sparse sweep that stores the coordinates of each cell
-- 
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