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進階檢索，從邏輯開始。
留意過全文檢索的小箭頭符號嗎？它是邏輯運算的入口，讓你一次組合多個關鍵字。
為什麼要用「邏輯運算」？
一般搜尋只能輸入單一字串，但是，透過邏輯符號，我們可以告訴系統：哪些詞要靠近、哪些要一起、哪些必須排除……
CBReader 支援七種邏輯運算符號：
| 符號 | 說明 | 範例 |
|---|---|---|
| + | 靠近（不計順序，相距 ≤ 30 字） | 佛陀+buddha 兩者相距不超過 30 字，且不計順序 |
| * | 先於（有順序，相距 ≤ 30 字） | 佛陀*buddha 「佛陀」出現在 buddha 前，且不超過 30 字 |
| & | 一起（不計順序、字距） | 佛陀&buddha 出現在同一卷 |
| , | 擇一 | 佛陀,buddha 只出現其中一者 |
| – | 排除 | 佛陀-佛陀曰 找出含「佛陀」但不含「佛陀曰」的卷子 |
| ? | 萬用字元 | 蓮?色 找出「蓮華色」、「蓮花色」… |
| ( ) | 分組（決定優先組合） | (佛陀*舍利弗),阿難陀 找出含「佛陀*舍利弗」或「阿難陀」的卷子 |
請留意：
應用這套邏輯運算，不再只是查找資料——也釐清思路！
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From Query to Clarification: Harnessing Logical Operators in CBReader Full-Text Search
Advanced query begins with logic.
Have you noticed the little arrow in the Full-Text Search panel? It leads to logical operation, allowing combination of multiple search strings in a single query.
Why use Logical Operation?
By default, searches are based on one string at a time. However, with a few simple symbols, you can tell the system which terms should appear together, which must be excluded, and how they relate to each other.
Seven Logical Operators in CBReader:
| Operators | Function | Example |
| + | Near (≤ 30 characters) | 佛陀+buddha 佛陀 near “buddha” within 30 characters |
| * | Before (A precedes B ≤ 30 characters) | 佛陀*buddha 佛陀 precedes “buddha” within 30 characters |
| & | AND (same fascicle) | 佛陀&buddha both appear in same fascicle |
| , | OR (alternative) | 佛陀,buddha match 佛陀 or “buddha” |
| – | Exclude (eliminate unwanted result) | 佛陀-佛陀曰 lookup 佛陀 while skipping 佛陀曰 |
| ? | Any (wildcard) | 蓮?色 variants 蓮華色, 蓮花色… |
| ( ) | Precedence (sets priority) | (佛陀*舍利弗),阿難陀 either 佛陀*舍利弗 or 阿難陀 |
Notes：
- Searches run per fascicle (historical texts) or section/chapter (modern works).
- Use halfwidth symbols, e.g. + & ?, instead of fullwidth ＋＆？.
Applying these logical operators not only enhances data retrieval, but also helps clarify and organise thought processes.
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