diff --git a/git/add.md b/git/add.md
index 237d527..050b7c4 100644
--- a/git/add.md
+++ b/git/add.md
@@ -9,12 +9,16 @@ Cons: More manual work, you have to edit the patch file yourself, which can be e
 - `+` lines: additions in the working tree (will be staged if kept).
 - `-` lines: deletions in the working tree (will be staged if kept).
 - Context lines (no prefix): unchanged lines needed for patch context.
-- To stage a change: keep the `+` or `-` line in the patch.
-- To NOT stage a change: **delete** the `+` or `-` line from the patch.
+- To stage an addition: keep the `+` line in the patch.
+- To NOT stage an addition: **delete** the `+` line from the patch.
+- To stage a deletion: keep the `-` line in the patch.
+- To NOT stage a deletion: **convert the `-` to a space**.
+- For modified content (shown with `-` lines followed by `+` lines):
+  - To NOT stage the modification: convert the `-` lines to spaces and remove the `+` lines.
+  - Note: modifying only half of the pair may cause confusing changes to the index.
 - To keep a line unchanged: leave context lines as-is.
-- **Never change `+` or `-` to spaces or vice versa** — this breaks the patch format and causes "patch does not apply" errors.
-- **To remove an added line (`+`) from being staged, delete the entire line.**
-  - If you break the patch, run `git checkout -- <file>` to undo, then run `git add -e` again.
+- If you want to decline the operation entirely, delete all lines of the patch.
+- If you break the patch, run `git checkout -- <file>` to undo, then run `git add -e` again.
 ## Git Add Hunks
 ### `git add -p`
 Select hunks of changes interactively. This allows you to stage only parts of the changes in a file.\