> For the complete documentation index, see [llms.txt](https://help.daak2.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.daak2.com/zh-tw/qi-ta-gong-neng/prepurchase.md).

# 預購清單

## 新增預購項目

1. 開啟 **預購清單**，點一下右上角 **+**。
2. 填寫項目名稱、預計金額和需要的說明。
3. 儲存後，項目會進入待購買清單，不會影響帳戶餘額。

## 完成購買

1. 點一下清單中的項目。
2. 選擇購買或付款操作。
3. 確認實際金額、帳本、付款帳戶、分類和日期。
4. 儲存後產生支出帳單，項目狀態會同步更新。

購買前可以修改名稱、預計金額或說明。暫時不買的項目可繼續保留；不再需要時再刪除。

{% hint style="info" %}
預購項目只是清單。只有完成購買並產生帳單後，才會影響餘額、統計和預算。
{% endhint %}


---

# Agent Instructions
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## Querying This Documentation
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```
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```

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